Flashcard- Angle Addition Postulate

Front

What is the Angle Addition Postulate?

Back

The Angle Addition Postulate states that if point B is in the interior of angle AOC, then m∠AOB + m∠BOC = m∠AOC.

Front

If m∠RST = (15x - 4)° and m∠RSU = (10x + 3)°, what is the value of x if m∠UST = 48°?

Back

x = 11

Front

What are complementary angles?

Back

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

Front

If m∠K = (3x + 3)° and m∠L = (10x - 4)°, what is the relationship between m∠K and m∠L if they are complementary?

Back

m∠K + m∠L = 90°.

Front

Calculate m∠DEF if it is a straight angle.

Back

m∠DEF = 180°.

Front

What is the measure of a right angle?

Back

A right angle measures 90°.

Front

If m∠ABC = 105°, what type of angle is it?

Back

It is an obtuse angle.

Front

If m∠NML = 138° and m∠EML = 88°, how do you find m∠NME?

Back

Use the fact that m∠NML + m∠EML + m∠NME = 180°.

Front

What is the sum of the measures of angles in a triangle?

Back

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

Front

If two angles are supplementary, what is their relationship?

Back

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