Symmetry Test -...

An isosceles triangle has ___________ line(s) of symmetry.

After rotating by 90° about the centre, a figure looks exactly the same as its original position. At what other angle will this happen for the same figure?

Dheeraj looks at different shapes and notices that they have 4 sides but the order of rotation is 2. Which of the following shapes can make his observation wrong?

Which of the following letters has a line of symmetry on both horizontal and vertical axes?

What is the order of rotation of the following figure?

Which of the following figures does not have a line of symmetry?

A figure has a rotational symmetry with the angle of rotation of 72°. What can be the order of rotation of that shape?

The order of rotation for a star fish is 2 + m. What is the value of m?

Which of the following is the correct symmetrical mirror image of the figure given below?

How many of the following letters have no line of symmetry?

W, X, Y, D, J, K, L, N, P, F, G, A, B, C

If a square has a hole close to one of its corners, what will be its order of rotational symmetry?

Match the following:

	Column I (Shape)		Column II (Lines of Symmetry)
(P)		i	4
(Q)		ii	1
(R)		iii	6
(S)		iv	2

If all the following shapes have rotational symmetry of order more than 1, then which of the following shapes is matched incorrectly with its angle of rotation?

State True or False for the following statements.

(i) The order of rotational symmetry is the number of times an object looks the same as it did originally when it is rotated through 180°.
(ii) A rectangle has 4 lines of symmetry.
(iii) A parallelogram has 2 lines of symmetry and zero order of rotation.

Choose the option which gives the respective values of A, B, C, D and E in the following table.