segment addition, angle addition, relationships

Front

What is segment addition?

Back

Segment addition is a principle that states if point B is between points A and C on a line segment, then AB + BC = AC.

Front

Define 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 are adjacent angles?

Back

Adjacent angles are two angles that share a common side and a common vertex but do not overlap.

Front

What are linear pairs of angles?

Back

Linear pairs of angles are two adjacent angles whose non-common sides form a straight line.

Front

Define supplementary angles.

Back

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

Front

What is an acute angle?

Back

An acute angle is an angle that measures more than 0 degrees and less than 90 degrees.

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 a right angle?

Back

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

Front

If m∠1 + m∠2 = 180°, what can we say about angles 1 and 2?

Back

Angles 1 and 2 are supplementary angles.

Front

If m∠A + m∠B = 90°, what can we say about angles A and B?

Back

Angles A and B are complementary angles.