Final Math 1B Topic 7-3

Front

What is the Triangle Sum Theorem?

Back

The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.

Front

If one angle of a triangle is 90 degrees, what is the sum of the other two angles?

Back

The sum of the other two angles is 90 degrees.

Front

What is the measure of angle A if angle B is 50 degrees and angle C is 60 degrees?

Back

Angle A measures 70 degrees (180 - 50 - 60 = 70).

Front

How do you find the measure of a missing angle in a triangle?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is the measure of angle b if angle a is 45 degrees and angle c is 90 degrees?

Back

Angle b measures 45 degrees (180 - 45 - 90 = 45).

Front

What is the definition of complementary angles?

Back

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

Front

What is the definition of supplementary angles?

Back

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

Front

If angle A is 30 degrees, what is the measure of its complement?

Back

The complement of angle A is 60 degrees (90 - 30 = 60).

Front

If angle A is 120 degrees, what is the measure of its supplement?

Back

The supplement of angle A is 60 degrees (180 - 120 = 60).

Front

What is the measure of angle C if angle A is 62 degrees and angle B is 59 degrees?

Back

Angle C measures 59 degrees (180 - 62 - 59 = 59).