Q4 a and b...
Dear Student,
A. Rotation turns an object about a fixed point. This fixed point is the centre of rotation. The angle by which the object rotates is the angle of rotation. A half-turn means rotation by 180°. A quarter-turn means rotation by 90°.It can rotate in either way: both clockwise and anticlockwise.
B. In a complete turn of 360°, the number of times an object looks exactly the same is called the order of rotational symmetry.
Regards
A. Rotation turns an object about a fixed point. This fixed point is the centre of rotation. The angle by which the object rotates is the angle of rotation. A half-turn means rotation by 180°. A quarter-turn means rotation by 90°.It can rotate in either way: both clockwise and anticlockwise.
B. In a complete turn of 360°, the number of times an object looks exactly the same is called the order of rotational symmetry.
Regards