Classifying Angles

Front

What type of angle is formed when two lines intersect to create a 90° angle?

Back

Right angle

Tags

CCSS.4.G.A.1

Front

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

Back

Complementary angles

Tags

CCSS.7.G.B.5

Front

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

Back

Supplementary angles

Tags

CCSS.7.G.B.5

Front

What type of angle measures less than 90°?

Back

Acute angle

Tags

CCSS.4.G.A.1

Front

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

Back

Obtuse angle

Tags

CCSS.4.G.A.1

Front

What type of angle measures exactly 180°?

Back

Straight angle

Tags

CCSS.4.G.A.1

Front

If angle A is 30° and angle B is 60°, are they complementary?

Back

Yes, because 30° + 60° = 90°.

Tags

CCSS.7.G.B.5

Front

If angle C is 120° and angle D is 60°, are they supplementary?

Back

Yes, because 120° + 60° = 180°.

Tags

CCSS.7.G.B.5

Front

What is the measure of an angle that is complementary to a 45° angle?

Back

45° (because 90° - 45° = 45°).

Tags

CCSS.7.G.B.5

Front

What is the measure of an angle that is supplementary to a 90° angle?

Back

90° (because 180° - 90° = 90°).

Tags

CCSS.7.G.B.5