Complementary & Supplementary Angles - With Algebra

Front

What are complementary angles?

Back

Complementary angles are two angles whose measures add up to 90 degrees.

Tags

CCSS.7.G.B.5

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180 degrees.

Tags

CCSS.7.G.B.5

Front

If one angle measures 30 degrees, what is its complementary angle?

Back

60 degrees (90 - 30 = 60).

Tags

CCSS.7.G.B.5

Front

If one angle measures 110 degrees, what is its supplementary angle?

Back

70 degrees (180 - 110 = 70).

Tags

CCSS.7.G.B.5

Front

Solve for x: m∠A + m∠B = 90, if m∠A = 2x + 10 and m∠B = 3x - 20.

Back

x = 20.

Tags

CCSS.7.G.B.5

Front

Solve for x: m∠A + m∠B = 180, if m∠A = 4x + 5 and m∠B = 2x + 25.

Back

x = 10.

Tags

CCSS.7.G.B.5

Front

What is the sum of the measures of two complementary angles?

Back

90 degrees.

Tags

CCSS.7.G.B.5

Front

What is the sum of the measures of two supplementary angles?

Back

180 degrees.

Tags

CCSS.7.G.B.5

Front

If m∠A = 45 degrees, what is m∠B if they are complementary?

Back

m∠B = 45 degrees (90 - 45 = 45).

Tags

CCSS.7.G.B.5

Front

If m∠A = 150 degrees, what is m∠B if they are supplementary?

Back

m∠B = 30 degrees (180 - 150 = 30).

Tags

CCSS.7.G.B.5