1.4 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 = (12x - 1)° and m∠RSU = (9x - 15)°, what is the value of x if m∠UST = 53°?

Back

x = 13

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 are the measures of angles K and L if they are complementary?

Back

m∠K = 24° and m∠L = 66°

Front

What is the measure of angle ABC if it is given that m∠ABC = 105°?

Back

m∠ABC = 105°.

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 m∠DEF = 180°, what type of angle is it?

Back

It is a straight angle.

Front

What is the relationship between angles K and L if they are complementary?

Back

m∠K + m∠L = 90°.

Front

If m∠H is another name for which angle?

Back

∠LHG.

Front

What is the formula to find the measure of an exterior angle of a triangle?

Back

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