Angles and triangles test questions

1

What kind of angle is this?

Obtuse angle diagram

2

What kind of angle is bigger than {180}^\circ?

3

Estimate the size of this angle

Obtuse angle diagram

4

Estimate the size of this angle.

Acute angle diagram

5

What is the size of this angle?

Protractor diagram

6

What is the sum of the angles in any triangle?

7

A quadrilateral shape has angles of {60}^\circ, {75}^\circ and {105}^\circ. What is the size of the fourth angle?

8

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

9

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?

10

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