Rotational Symmetry
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Q1
In the given figure, the order of rotational symmetry is
Marks:1Answer:
2.
Explanation:
In the given figure, there are precisely two positions of rotation through the angles 180° and 360°.

Q2
If after a rotation an object looks exactly the same, then it is known as
Marks:1Answer:
rotational symmetry.
Explanation:
Rotation may be clockwise or anticlockwise.
In the above figures, a point ‘A’ is rotated by 90° and after completing a fullturn point ‘A’ reaches its original position. 
Q3
The degree measure of the angle of rotation for a quarterturn will be
Marks:1Answer:
90°.
Explanation:
A quarterturn means rotation by 90°.

Q4
The degree measure of the angle of rotation for a halfturn is
Marks:1Answer:
180°.
Explanation:
A halfturn means rotation by 180°.

Q5
A figure which has both linear symmetry and a rotational symmetry is a
Marks:1Answer:
circle.
Explanation:
A circle can be rotated around its centre through any angle and at the same time it has multiple lines of symmetry.