Angle and Shape Quiz

An angle that is exactly 90 degrees is called a _________ angle.

Which of the following shapes has no right angles?

• Rectangle

• Triangle

• Square

• Circle

A triangle has one angle measuring 45°, another angle measuring 75°, and one unknown angle. What is the measure of the unknown angle?

• 30°

• 60°

• 75°

• 90°

Which type of angle is always larger than 180° but smaller than 360°?

• Acute

• Right

• Straight

• Reflex

The hands of a clock show 3:00. What type of angle do the clock hands form?

• Acute

• Right

• Obtuse

• Reflex

A protractor shows an angle that measures 45°. What type of angle is this?

• Acute

• Obtuse

• Right

• Straight

Which of these angles is the smallest?

• 25°

• 45°

• 90°

• 180°

A straight angle is divided into two parts: one angle measures 110°. What is the measure of the other angle?

• 70°

• 90°

• 110°

• 180°

Which tool is best used to measure angles accurately?

• Ruler

• Compass

• Protractor

• Calculator

A ladder leans against a wall, forming a 75° angle with the ground. What type of angle is this?

• Acute

• Right

• Obtuse

• Reflex