Unit 7 Flashcard 2 Finding Missing Angle Measurements Using Equations

Front

What is the sum of angles in a triangle?

Back

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

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.

Front

What is the relationship between complementary angles?

Back

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

Front

What is the relationship between supplementary angles?

Back

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

Front

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

Back

The complementary angle measures 60 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 an equation used to find missing angle measurements?

Back

An equation can be set up using the sum of angles, such as x + y = 180 for supplementary angles.

Front

What does 'x' represent in angle measurement problems?

Back

'x' represents the unknown angle measurement that needs to be solved.

Front

How do you solve for 'x' in the equation x + 48 = 90?

Back

Subtract 48 from both sides: x = 90 - 48, so x = 42.

Front

What is the formula for finding the measure of an exterior angle of a triangle?

Back

The exterior angle is equal to the sum of the two opposite interior angles.