12.3 Warm-up Missing Angles and Equations

Front

What is the value of x if the equation is 123 + 3x = 180?

Back

x = 19

Front

What do complementary angles add up to?

Back

90 degrees

Front

What do supplementary angles add up to?

Back

180 degrees

Front

Find the missing angle if one angle is 74 degrees and they are complementary.

Back

16 degrees

Front

Find the missing angle if one angle is 123 degrees and they are supplementary.

Back

57 degrees

Front

What is the definition of complementary angles?

Back

Two angles that add up to 90 degrees.

Front

What is the definition of supplementary angles?

Back

Two angles that add up to 180 degrees.

Front

If angle A is 35 degrees, what is the measure of its complementary angle?

Back

55 degrees

Front

If angle B is 66 degrees, what is the measure of its supplementary angle?

Back

114 degrees

Front

Solve for x: 123 + 3x = 90.

Back

No solution, as x cannot be negative.