IMO Practice Test: 2D Shapes & Symmetry | Class 4 Mathematics

Question 1 of 6 hard

A regular polygon's number of lines of symmetry equals its…

number of sides

number of diagonals

area

perimeter

Explanation: A regular polygon has as many symmetry lines as sides.

Question 2 of 6 medium

How many more sides does a hexagon have than a triangle?

3

2

4

6

Explanation: 6 − 3 = 3 more sides.

Question 3 of 6 hard

Two triangles are joined to form a square. How many sides does the square have?

4

6

3

8

Explanation: The outer shape, a square, has 4 sides.

Question 4 of 6 medium

A rhombus is a quadrilateral with…

all four sides equal

only one pair of equal sides

three sides

a curved side

Explanation: A rhombus has four equal sides.

Question 5 of 6 medium

Which letter has NO line of symmetry?

R

H

X

O

Explanation: The letter R cannot be folded into matching halves.

Question 6 of 6 hard

How many triangles can a hexagon be split into by drawing lines from one corner?

4

6

3

5

Explanation: A hexagon splits into 4 triangles from one corner.

IMO Practice Test — 2D Shapes & Symmetry