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Classifying Triangles 24/1/2025

Total questions: 10

Worksheet time: 3mins

Name
Class
Date
1.

Triangles can be classified using their ...............

a)

vertices

b)

angles

c)

sides

2.

A triangle with 3 equal sides is called ..................

a)

right-angled triangle

b)

isosceles triangle

c)

equilateral triangle

3.

A triangle with at least one angle greater than 90 degrees is a/an ________ triangle.

a)

right-angled

b)

acute-angled

c)

obtuse-angled

4.

How many acute angles does an acute-angled triangle has?

a)

1

b)

2

c)

3

5.

Name this triangle.

a)

Equilateral triangle

b)

Isosceles triangle

c)

Right-angled triangle

6.

Name this triangle.

a)

Isosceles triangle

b)

Acute-angled triangle

c)

Obtuse-angled triangle

7.

How is this triangle classified?

a)

Isosceles triangle

b)

Acute-angled triangle

c)

Right-angled triangle

8.

Danielle has drawn a triangle with sides of length 5cm, 5cm and 8cm.


What type of triangle has she drawn?

a)

Isosceles triangle

b)

Equilateral triangle

9.

Acute triangles are triangles with only acute angles inside.


Select all the acute triangles below:

a)
b)
c)
d)
10.

The following options show the different sides of triangles. Which option is not a triangle?

a)

3 cm, 4 cm, 5 cm

b)

3 cm, 4 cm, 7 cm

c)

5 cm, 10 cm, 12 cm