Symmetry Test

Result

Symmetry Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

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.

A
(i) - F, (ii) - F, (iii) - F

B
(i) - T, (ii) - T, (iii) - T

C
(i) - F, (ii) - T, (iii) - F

D
(i) - T, (ii) - F, (iii) - T

Solution

Statement 1: False
A shape has rotational symmetry of order 1 when it still looks the same after a rotation of 360 degrees.
Statement 2: False
A rectangle is a shape with two lines of symmetry.
Statement 3: False
A parallelogram has zero lines of symmetry, but the order of rotation is 2.
Question 2
1 / -0

Which of the following letters has 2 lines of symmetry and rotational symmetry of order 2?

A
A

B
N

C
S

D
X

Solution

Letter A has 1 line of symmetry and rotational symmetry of order 1.
Letter N has no line of symmetry but has rotational symmetry of order 2.
Letter S has no line of symmetry but has rotational symmetry of order 2.
Letter X has 2 lines of symmetry (both vertical and horizontal) and rotational symmetry of order 2.