Naming and Measuring Angles

What do you call a point where two lines meet?

• angle

• vertex

• line

• side

Do line PR and line SR make ∠w?

• No

• Yes

• Maybe

• Not sure

What symbol is used for measuring the size of an angle?

• ∠

• °

• ─

• △

∠EDG = ______

• 30°

• 40°

• 50°

• 60°

∠CDA = _____

• 20°

• 30°

• 40°

• 45°

Which angle measures less than 90°?

• Obtuse angle

• Acute angle

• Right angle

• Straight angle

∠EDC = _____

• 180°

• 90°

• 45°

• 30°

Which angle measures exactly 90°?

• Right angle

• Acute angle

• Obtuse angle

• Straight angle

What instrument is used to measure and draw angles?

• ruler

• protractor

• angle

• line

∠EDR = ______

• 100°

• 105°

• 110°

• 115°