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∠FGB + m∠BGH = m∠FGH, what does this represent?

Back

This represents the Angle Addition Postulate, where angle FGB and angle BGH combine to form angle FGH.

Front

Calculate m∠DEF if m∠DEF = 180°.

Back

m∠DEF = 180°.

Front

Given m∠NML = 138° and m∠EML = 88°, find m∠NME.

Back

m∠NME = 50°.

Front

If m∠RST = (15x - 4)° and m∠RSU = (10x + 3)°, and m∠UST = 48°, find x.

Back

x = 11.

Front

What is the sum of angles in a triangle?

Back

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

Front

If m∠ABC = 105°, what is the measure of its supplementary angle?

Back

The supplementary angle is 75°.

Front

What is a complementary angle?

Back

Two angles are complementary if the sum of their measures is 90°.

Front

If m∠RST = 161° and m∠RSU = 113°, what is the relationship between these angles?

Back

They are adjacent angles that form a linear pair.

Front

What is the formula for finding 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.