Geometry Basics

Front

What are vertical angles?

Back

Angles that are opposite of each other when lines intersect.

Tags

CCSS.7.G.B.5

Front

Define complementary angles.

Back

Two angles that add up to 90°.

Tags

CCSS.7.G.B.5

Front

Define supplementary angles.

Back

Two angles that add up to 180°.

Tags

CCSS.7.G.B.5

Front

What are adjacent angles?

Back

Angles that share a common side and vertex.

Tags

CCSS.7.G.B.5

Front

If m∠A = 83°, what is the measure of its complement?

Back

7°.

Tags

CCSS.7.G.B.5

Front

If m∠B = 97°, what is the measure of its supplement?

Back

83°.

Tags

CCSS.7.G.B.5

Front

What type of angle pair are ∠1 and ∠3 if they are opposite angles formed by two intersecting lines?

Back

Vertical angles.

Tags

CCSS.7.G.B.5

Front

What type of angle pair are ∠1 and ∠3 if they are on the same side of a transversal and add up to 180°?

Back

Linear pair.

Front

If m∠RST = (12x - 1)° and m∠RSU = (9x - 15)°, find x if m∠UST = 53°.

Back

x = 13.

Tags

CCSS.8.G.A.5

Front

What is the sum of the angles in a triangle?

Back

180°.

Tags

CCSS.8.G.A.5