Question

b) A circular wheel, while completing a full turn, fits exactly into its original position (as shown in Fig. 3) 12 times. Find the angle of rotational symmetry of the wheel. Fig. 3​

Answer 1

Answer:

The angle of turning during rotation is called the angle of rotation. A full turn, you know, means a rotation of 360°. What is the degree measure of the angle of rotation for (i) a half-turn? (ii) a quarter-turn? A half-turn means rotation by 180°; a quarter-turn is rotation by 90°.

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