Angle Bisector + Angle addition

Front

What is an angle bisector?

Back

An angle bisector is a line or ray that divides an angle into two equal parts.

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

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Front

If m∠A = 25 degrees, what is m∠B if m∠A + m∠B = 90 degrees?

Back

m∠B = 90 - 25 = 65 degrees.

Front

If angle JHG measures 161 degrees, what is the measure of the supplementary angle?

Back

The supplementary angle is 180 - 161 = 19 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 m∠GHK = 80.5 degrees, what is m∠KHJ if m∠GHK + m∠KHJ = 180 degrees?

Back

m∠KHJ = 180 - 80.5 = 99.5 degrees.