Quiz on Angle Theorems

Angles in a quadrilateral add up to:

• 180°

• 360°

• 270°

• 720°

In a right-angled triangle, one of the angles is always:

• 30°

• 45°

• 60°

• 90°

Which of the following is true about alternate interior angles?

• They are not equal.

• They form a straight line.

• They are equal.

• They are supplementary

What is the name of angles that lie on the same side of a transversal and are between two lines?

• Alternate angles

• Corresponding angles

• Interior angles

• Co-interior angles

If one angle of a triangle is 90°, and another is 45°, what is the third angle?

• 90°

• 35°

• 45°

• 60°

Two vertically opposite angles are formed by intersecting lines. If one is 115°, find the other.

• 115°

• 65°

• 75°

• 105°

In a right-angled triangle, one angle is 90° and another is 30°. Find the third angle.

• 60°

• 50°

• 40°

• 45°

Two supplementary angles are in the ratio 2:3. Find the size of each angle.

• 60° and 90°

• 72° and 108°

• 80° and 100°

• 90° and 120°

Two angles form a pair of complementary angles. If one is 38°, find the other.

• 42°

• 48°

• 52°

• 90°

In a triangle, one exterior angle is 110°, and one of the opposite interior angles is 40°. Find the other opposite interior angle.

• 60°

• 70°

• 80°

• 50°