Basic Geometrical Ideas (2D)
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Q1
In the given figure, interior points of the angle are
Marks:1Answer:
A, P and T
Explanation:
A, P and T are the interior points of the given angle.

Q2
In the given figure, the number of line segments is
Marks:1Answer:
4.
Explanation:
A line segment is a portion of a line whose end points are fixed. So, here there are four line segments.

Q3
In the given figure, lines l, m and n intersect at point O. Can we draw any more lines through O? If yes, then the number of lines can pass through a point is
Marks:1Answer:
infinite.
Explanation:
Infinite number of lines can pass through a point. 
Q4
In the figure, the shortest route from A to B is
Marks:1Answer:
AB
Explanation:
The shortest route is the shortest join of point A to B (including A and B) shown here is a line segment.
It is denoted by AB or BA. The points A and B are called the end points of the segment.

Q5
In the given figure, points A, O and B are called
Marks:1Answer:
collinear.
Explanation:
Collinear points (points, lie on the same line are called collinear points)