Important Questions Class 6 Maths Chapter 2 Lines and Angles

Lines and angles are basic geometry ideas used to describe points, paths, corners, turns and shapes. A ray has one fixed starting point, while a line extends endlessly in both directions.

Geometry becomes clearer when students connect diagrams with everyday objects like clocks, doors, notebooks, tiles and railway tracks. Important Questions Class 6 Maths Chapter 2 helps students revise Lines and Angles through definitions, diagrams, comparisons, reasoning questions and solved examples. The 2026 CBSE pattern expects students to identify points, lines, rays, line segments, angle types, parallel lines and perpendicular lines accurately. These questions support worksheet practice, school tests and chapter revision.

Key Takeaways

• Line Segment: A line segment has two fixed endpoints and a definite measurable length.
• Ray: A ray starts from one fixed point and extends endlessly in one direction.
• Angle: An angle forms when two rays meet at a common endpoint called the vertex.
• Right Angle: A right angle measures exactly 90° and appears in square corners.

Important Questions Class 6 Maths Chapter 2 Structure 2026

Class 6 Maths Chapter 2 Important Questions with Answers

Students should first learn the exact meaning of each geometry term. These class 6 maths chapter 2 important questions build the base for every diagram-based answer.

1. What is a point in geometry?

A point shows an exact position and has no length, breadth or height.

1. A point is usually named with a capital letter.
2. It has no size.
3. A dot on paper can represent a point.

Final Answer: A point marks an exact position.

2. What is a line?

A line extends endlessly in both directions and has no fixed endpoints.

1. A line cannot be measured fully.
2. Arrows on both ends show endless extension.
3. A line can pass through two given points.

Final Answer: A line has no endpoints.

3. What is a line segment?

A line segment is a part of a line with two fixed endpoints.

1. It has a definite length.
2. It can be measured with a ruler.
3. It is written as line segment AB when A and B are endpoints.

Final Answer: A line segment has two endpoints and a fixed length.

4. What is a ray?

A ray has one fixed endpoint and extends endlessly in one direction.

1. The fixed point is called the initial point.
2. The other side continues without end.
3. Sun rays are common real-life examples.

Final Answer: A ray has one endpoint.

5. How many lines can pass through one point?

Infinitely many lines can pass through one point.

1. Mark one point on paper.
2. Draw straight lines through that point.
3. There is no fixed limit.

Final Answer: Infinitely many lines can pass through one point.

6. How many lines pass through two points?

Only one line can pass through two distinct points.

1. Mark two different points A and B.
2. Join them with a straight line.
3. No second different line can pass through both points.

Final Answer: Exactly one line passes through two distinct points.

Point Line Ray Line Segment Class 6 Questions

The topic point line ray line segment class 6 helps students read diagrams correctly. These terms appear in almost every set of line segment questions class 6 students solve.

7. What is the difference between a line and a line segment?

A line has no endpoints, while a line segment has two endpoints.

Final Answer: A line is endless, but a line segment has fixed length.

8. What is the difference between a ray and a line segment?

A ray has one endpoint, while a line segment has two endpoints.

Final Answer: A ray extends endlessly in one direction.

9. Why can a line segment be measured?

A line segment can be measured because it has two fixed endpoints.

1. One endpoint gives the starting point.
2. The second endpoint gives the ending point.
3. A ruler measures the distance between both endpoints.

Final Answer: A line segment has a definite length.

10. Can a line be measured completely?

No, a line cannot be measured completely.

1. A line extends endlessly in both directions.
2. It has no starting point.
3. It has no ending point.

Final Answer: A line has no fixed length.

11. Can a ray be measured completely?

No, a ray cannot be measured completely.

1. A ray starts from one fixed point.
2. It extends endlessly in one direction.
3. Its full length cannot be found.

Final Answer: A ray cannot be measured fully.

12. Give two examples of line segments from daily life.

A ruler edge and a pencil edge are examples of line segments.

1. Both have fixed endpoints.
2. Both have measurable lengths.
3. Their edges do not extend endlessly.

Final Answer: Ruler edge and pencil edge are line segment examples.

Class 6 Maths Chapter 2 Lines and Angles Concept Questions

The phrase class 6 maths chapter 2 lines and angles includes two connected ideas. Lines form shapes, and rays form angles when they meet at one endpoint.

13. What is an angle?

An angle forms when two rays meet at a common endpoint.

1. The common endpoint is called the vertex.
2. The two rays are called arms.
3. The opening between the arms forms the angle.

Final Answer: Two rays with one common endpoint form an angle.

14. What are the arms of an angle?

The arms of an angle are the two rays that form it.

1. Both rays start from the same endpoint.
2. They open in different directions.
3. The opening creates the angle.

Final Answer: The two rays of an angle are its arms.

15. What is the vertex of an angle?

The vertex of an angle is the common endpoint of its two arms.

1. Two rays meet at this point.
2. The angle opens from this point.
3. The middle letter names the vertex in angle notation.

Final Answer: The vertex is the common endpoint.

16. In ∠ABC, which point is the vertex?

In ∠ABC, B is the vertex.

1. The middle letter names the vertex.
2. BA and BC are the arms.
3. Both arms meet at B.

Final Answer: B is the vertex of ∠ABC.

17. What are the arms in ∠PQR?

The arms of ∠PQR are QP and QR.

1. Q is the vertex.
2. QP starts from Q.
3. QR also starts from Q.

Final Answer: QP and QR are the arms.

18. Why do two rays form an angle only when they share an endpoint?

Two rays form an angle only when they have one common endpoint.

1. The common endpoint becomes the vertex.
2. The two rays become arms.
3. Without a common endpoint, no single angle forms.

Final Answer: A common endpoint is needed to form an angle.

Types of Angles Class 6 Important Questions

The types of angles class 6 topic helps students classify turns by size. These angles questions for class 6 often appear as MCQs, fill in the blanks and diagram-based questions.

19. What is a zero angle?

A zero angle measures 0°.

1. Both arms lie in the same direction.
2. There is no opening between the arms.
3. It represents no turn.

Final Answer: A zero angle measures 0°.

20. What is an acute angle?

An acute angle is greater than 0° and less than 90°.

1. It is smaller than a right angle.
2. It has a narrow opening.
3. 30°, 45° and 60° are acute angles.

Final Answer: An acute angle lies between 0° and 90°.

21. What is a right angle?

A right angle measures exactly 90°.

1. It forms a square corner.
2. It appears in doors, books and tiles.
3. Perpendicular lines form right angles.

Final Answer: A right angle measures 90°.

22. What is an obtuse angle?

An obtuse angle is greater than 90° and less than 180°.

1. It is bigger than a right angle.
2. It is smaller than a straight angle.
3. 110°, 125° and 150° are obtuse angles.

Final Answer: An obtuse angle lies between 90° and 180°.

23. What is a straight angle?

A straight angle measures exactly 180°.

1. Its arms form a straight line.
2. It represents half a complete turn.
3. It is twice a right angle.

Final Answer: A straight angle measures 180°.

24. What is a complete angle?

A complete angle measures exactly 360°.

1. It represents one full turn.
2. The starting and ending positions become the same.
3. A clock hand completes 360° in one full round.

Final Answer: A complete angle measures 360°.

25. Classify 75° as acute, right or obtuse.

75° is an acute angle.

1. Acute angles are less than 90°.
2. 75° is greater than 0°.
3. Therefore, 75° is acute.

Final Answer: 75° is an acute angle.

26. Classify 90° as acute, right or obtuse.

90° is a right angle.

1. A right angle measures exactly 90°.
2. It is neither acute nor obtuse.
3. It forms a square corner.

Final Answer: 90° is a right angle.

27. Classify 135° as acute, right or obtuse.

135° is an obtuse angle.

1. Obtuse angles are greater than 90°.
2. They are less than 180°.
3. 135° satisfies both conditions.

Final Answer: 135° is an obtuse angle.

28. Which angle is formed by a quarter turn?

A quarter turn forms a right angle.

1. A complete turn measures 360°.
2. One-fourth of 360° is 90°.
3. A 90° angle is a right angle.

Formula Used:
360° ÷ 4 = 90°

Final Answer: A quarter turn forms a right angle.

Acute Angle Obtuse Angle Right Angle Class 6 Questions

The keyword acute angle obtuse angle right angle class 6 covers the three most tested angle types. Students should compare every given angle with 90°.

29. Choose the acute angle: 45°, 90°, 120°, 180°.

45° is the acute angle.

1. Acute angles are less than 90°.
2. 45° is less than 90°.
3. 90°, 120° and 180° are not acute.

Final Answer: 45°.

30. Choose the right angle: 30°, 60°, 90°, 150°.

90° is the right angle.

1. A right angle measures exactly 90°.
2. 30° and 60° are acute angles.
3. 150° is an obtuse angle.

Final Answer: 90°.

31. Choose the obtuse angle: 20°, 80°, 100°, 180°.

100° is the obtuse angle.

1. An obtuse angle is greater than 90°.
2. It is less than 180°.
3. 100° lies between 90° and 180°.

Final Answer: 100°.

32. Give two daily-life examples of acute angles.

Partly opened scissors and a slightly opened book can show acute angles.

1. Both openings can be less than 90°.
2. Such angles are narrow.
3. They look smaller than a square corner.

Final Answer: Scissors and a slightly opened book can show acute angles.

33. Give two daily-life examples of right angles.

A notebook corner and a door corner are examples of right angles.

1. Both form square corners.
2. Square corners measure 90°.
3. These examples help identify right angles quickly.

Final Answer: Notebook corner and door corner.

34. Give two daily-life examples of obtuse angles.

A widely opened door and a wide clock-hand opening can show obtuse angles.

1. Both can form angles greater than 90°.
2. They remain less than 180°.
3. Such angles look wider than right angles.

Final Answer: Widely opened doors and clock hands can show obtuse angles.

Parallel Lines Class 6 and Perpendicular Lines Class 6 Questions

Students see special line pairs in maps, tiles, ladders, windows and notebooks. These parallel lines class 6 and perpendicular lines class 6 questions train visual identification.

35. What are parallel lines?

Parallel lines are lines that never meet, even when extended.

1. They remain the same distance apart.
2. They move in the same direction.
3. Railway tracks are common examples.

Final Answer: Parallel lines never intersect.

36. What are perpendicular lines?

Perpendicular lines meet each other at 90°.

1. They intersect at one point.
2. They form a right angle.
3. The letter L can show perpendicular lines.

Final Answer: Perpendicular lines meet at a right angle.

37. Are railway tracks examples of parallel lines?

Yes, railway tracks are examples of parallel lines.

1. The two tracks run side by side.
2. They remain the same distance apart.
3. They do not meet normally.

Final Answer: Railway tracks show parallel lines.

38. Are the opposite sides of a rectangle parallel?

Yes, the opposite sides of a rectangle are parallel.

1. A rectangle has two pairs of opposite sides.
2. Each opposite pair remains equally spaced.
3. They do not meet when extended.

Final Answer: Opposite sides of a rectangle are parallel.

39. Are adjacent sides of a rectangle perpendicular?

Yes, adjacent sides of a rectangle are perpendicular.

1. Adjacent sides meet at a corner.
2. Each rectangle corner measures 90°.
3. Lines meeting at 90° are perpendicular.

Final Answer: Adjacent sides of a rectangle are perpendicular.

40. What is the difference between parallel and perpendicular lines?

Parallel lines never meet, while perpendicular lines meet at 90°.

Final Answer: Parallel lines do not intersect, but perpendicular lines intersect at 90°.

Class 6 Lines and Angles Extra Questions for Practice

These class 6 lines and angles extra questions help students revise mixed concepts. They also strengthen class 6 maths chapter 2 extra questions for worksheet and school exam practice.

41. Fill in the blank: A line segment has ______ endpoints.

A line segment has two endpoints.

1. It starts at one endpoint.
2. It ends at another endpoint.
3. Its length is fixed between both endpoints.

Final Answer: Two.

42. Fill in the blank: A ray has ______ endpoint.

A ray has one endpoint.

1. It starts from one fixed point.
2. It continues endlessly in one direction.
3. The fixed point is its endpoint.

Final Answer: One.

43. Fill in the blank: A right angle measures ______.

A right angle measures 90°.

1. It forms a square corner.
2. It is half of a straight angle.
3. It appears in many classroom objects.

Final Answer: 90°.

44. Fill in the blank: A straight angle measures ______.

A straight angle measures 180°.

1. Its arms form a straight line.
2. It is twice a right angle.
3. It represents half a full turn.

Final Answer: 180°.

45. True or False: A ray has two endpoints.

False, a ray has only one endpoint.

1. A ray starts at one fixed point.
2. It extends endlessly in one direction.
3. A line segment has two endpoints.

Final Answer: False.

46. True or False: A line segment can be measured.

True, a line segment can be measured.

1. It has two fixed endpoints.
2. Its length is definite.
3. A ruler can measure it.

Final Answer: True.

47. True or False: Perpendicular lines form right angles.

True, perpendicular lines form right angles.

1. Perpendicular lines intersect each other.
2. The angle between them is 90°.
3. 90° is a right angle.

Final Answer: True.

48. True or False: Parallel lines meet at one point.

False, parallel lines never meet.

1. They remain equally spaced.
2. They continue in the same direction.
3. They do not intersect.

Final Answer: False.

Class 6 Maths Lines and Angles Questions for School Exams

School tests often mix definitions, diagrams, comparisons and clock examples. These class 6 maths lines and angles questions match common answer-writing patterns.

49. What angle do clock hands make at 3 o’clock?

Clock hands make a right angle at 3 o’clock.

1. The minute hand points at 12.
2. The hour hand points at 3.
3. The angle between them is 90°.

Final Answer: 90°, a right angle.

50. What angle do clock hands make at 6 o’clock?

Clock hands make a straight angle at 6 o’clock.

1. The minute hand points at 12.
2. The hour hand points at 6.
3. The two hands form a straight line.

Final Answer: 180°, a straight angle.

51. What angle do clock hands make at 12 o’clock?

Clock hands make a zero angle at 12 o’clock.

1. Both hands point in the same direction.
2. There is no opening between them.
3. The angle measure is 0°.

Final Answer: 0°, a zero angle.

52. Why is the corner of a notebook a right angle?

The corner of a notebook is a right angle because its edges meet at 90°.

1. Two straight edges meet at the corner.
2. They form a square corner.
3. A square corner measures 90°.

Final Answer: A notebook corner forms a right angle.

53. Why are ruled notebook lines parallel?

Ruled notebook lines are parallel because they never meet.

1. They run in the same direction.
2. The distance between them stays equal.
3. They do not intersect on the page.

Final Answer: Ruled notebook lines are parallel.

54. Why is the letter L an example of perpendicular lines?

The letter L shows perpendicular lines because its two arms meet at 90°.

1. One arm is vertical.
2. The other arm is horizontal.
3. They meet at a right angle.

Final Answer: The letter L shows perpendicular lines.

Lines and Angles Class 6 Important Questions for Reasoning

Reasoning questions check whether students understand the idea behind each term. These lines and angles class 6 important questions are useful for higher-order classroom practice.

55. Can two different line segments have the same endpoints?

No, two different straight line segments cannot have the same endpoints.

1. Two fixed points determine one straight segment.
2. The shortest path between them is unique.
3. Any curved path is not a line segment.

Final Answer: Only one straight line segment joins two fixed endpoints.

56. Can an angle have more than one vertex?

No, one angle has only one vertex.

1. The vertex is the common endpoint.
2. Two arms meet at this point.
3. One pair of arms forms one angle at one vertex.

Final Answer: One angle has one vertex.

57. Can two lines meet at more than one point?

No, two distinct lines can meet at only one point.

1. If they meet at two points, they become the same line.
2. Distinct intersecting lines have one common point.
3. Parallel lines have no common point.

Final Answer: Two distinct lines can meet at one point only.

58. Can parallel lines become perpendicular?

No, the same pair of lines cannot be both parallel and perpendicular.

1. Parallel lines never meet.
2. Perpendicular lines must meet.
3. Their meanings are different.

Final Answer: A line pair cannot be both parallel and perpendicular.

59. Why is a straight angle larger than a right angle?

A straight angle is larger because it measures 180°, while a right angle measures 90°.

1. 180° is greater than 90°.
2. A straight angle equals two right angles.
3. A right angle forms only a quarter turn.

Calculation:
90° + 90° = 180°

Final Answer: A straight angle is twice a right angle.

60. Why is a complete angle four times a right angle?

A complete angle is four times a right angle because 360° equals 4 × 90°.

1. A right angle measures 90°.
2. A complete angle measures 360°.
3. Four right angles make one complete turn.

Calculation:
4 × 90° = 360°

Final Answer: A complete angle equals four right angles.

Important Questions Class 6 Maths: