Angles & Lines (REVIEW)

Front

What are lines that intersect at a point called?

Back

Intersecting lines.

Front

What tool do you use to measure angles?

Back

Protractor.

Front

What is the angle measure of a right angle?

Back

90°.

Front

What is the angle measure of a full circle?

Back

360°.

Front

What do you call two angles that add up to 90°?

Back

Complementary angles.

Front

What are lines that never meet called?

Back

Parallel lines.

Front

What type of angle measures less than 90°?

Back

Acute angle.

Front

What type of angle measures more than 90° but less than 180°?

Back

Obtuse angle.

Front

What do you call angles that add up to 180°?

Back

Supplementary angles.

Front

What is the term for an angle that measures exactly 180°?

Back

Straight angle.