Angles in triangles and quadrilaterals test questions - 3rd level Maths Revision

1

What is the sum of the angles in any triangle?

\[{90}^\circ\]

\[{180}^\circ\]

\[{360}^\circ\]

2

A quadrilateral shape has angles of \({60}^\circ\), \({75}^\circ\) and \({105}^\circ\).

What is the size of the fourth angle?

\[{80}^\circ\]

\[{105}^\circ\]

\[{120}^\circ\]

3

What is the size of each angle in an equilateral triangle?

\[{60}^\circ\]

\[{90}^\circ\]

There isn't enough information in the question

4

The size of two of the three angles in a triangle are \({40}^\circ\) and \({70}^\circ\). What is the special name given to this triangle?

Isosceles triangle

Equilateral triangle

Scalene triangle

5

The biggest angle in an isosceles triangle is \({100}^\circ\). What are the size of the other two angles?

\[{30}^\circ\]

\[{40}^\circ\]

\[{50}^\circ\]

6

In this diagram what is the value of f?

Diagram of a scalene triangle with angles of 80°, 67° and an unknown angle marked as f°

\[33^\circ\]

\[57^\circ\]

\[147^\circ\]

7

This triangle is isosceles. What is the value of g?

An isosceles triangle with a base angle of 30° and an unknown angle labelled as g°

\[30^\circ\]

\[60^\circ\]

\[120^\circ\]

8

This triangle is isosceles. What is the value of h?

An isosceles triangle with a base angle of 65° and an unknown angle labelled as h°

\[50^\circ\]

\[65^\circ\]

\[130^\circ\]

9

For this rectangle what is the value of i?

Rectangle made of 4 isosceles triangles, one with a 30° base angle

\[30^\circ\]

\[60^\circ\]

\[90^\circ\]

10

For this kite what is the value of k?

Diagram of a kite with a 77° angle within a circle

\[13^\circ\]

\[77^\circ\]

\[90^\circ\]