Week 4: Symmetry

Question 1

What is the smallest angle of rotational symmetry for a square?

Revolt · Accepted Answer

90º

Question 2

A regular polygon has 15 sides. Which is a possible angle of rotational symmetry for the figure?

Revolt · Accepted Answer

72°

Question 3

Which figure has the same order of rotational symmetry as a rectangle?

Revolt · Accepted Answer

rhombus

Question 4

If the smallest angle of rotation for a regular polygon is 18°, how many sides does polygon have?

Revolt · Accepted Answer

20

Question 5

Which figure shows a line of reflectional symmetry for the letter T?

Revolt · Accepted Answer

A letter T is folded vertically through the middle.

Question 6

If a quadrilateral has exactly 2 lines of symmetry, and both are angle bisectors, then which statement would be true?

Revolt · Accepted Answer

The figure could be a rhombus because the 2 lines of symmetry bisect the angles.

Question 7

A rhombus has 4 equal sides.

Revolt · Accepted Answer

2

Question 8

Which letter in the word HAPPY has an order 2 rotational symmetry?

Revolt · Accepted Answer

H

Question 9

Which figure has an order 3 rotational symmetry?

Revolt · Accepted Answer

equilateral triangle

Question 10

An equilateral triangle with all equal side lengths and angle measures.

Revolt · Accepted Answer

3

Week 4: Symmetry Answers