Finding Missing Angles

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What is the definition of a complementary angle?

Back

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

Front

What is the definition of a supplementary angle?

Back

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

Front

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

Back

To find the measure of an unknown angle in a triangle, subtract the sum of the known angles from 180 degrees.

Front

What is the measure of angle FCA if angle F is 67 degrees and angle C is 90 degrees?

Back

Angle FCA measures 23 degrees.

Front

What is the relationship between angles in a linear pair?

Back

Angles in a linear pair are supplementary, meaning they add up to 180 degrees.

Front

If one angle measures 120 degrees, what is the measure of its supplementary angle?

Back

The supplementary angle measures 60 degrees.

Front

What is the measure of angle G if angle F is 30 degrees and they are complementary?

Back

Angle G measures 60 degrees.

Front

What is the formula for finding the missing angle in a right triangle?

Back

In a right triangle, the missing angle can be found using the formula: 90 degrees - (measure of the known angle).

Front

What is the measure of angle A if angle B is 45 degrees and angle C is 90 degrees in a right triangle?

Back

Angle A measures 45 degrees.