Angle Addition and Angle Bisector

Front

What is the definition of an acute angle?

Back

An acute angle is a single angle that measures between 0 and 90 degrees.

Front

What is the definition of an obtuse angle?

Back

An obtuse angle is a single angle that measures between 90 and 180 degrees.

Front

What does the term 'bisect' mean in geometry?

Back

To bisect means to cut something into two congruent pieces or in half.

Front

What is the sum of the angles in a triangle?

Back

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

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 the measure of angle AOB plus the measure of angle BOC equals the measure of angle AOC.

Front

How do you find the measure of an angle bisector?

Back

To find the measure of an angle bisector, you divide the measure of the angle into two equal parts.

Front

What is a straight angle?

Back

A straight angle is an angle that measures exactly 180 degrees.

Front

What is a complementary angle?

Back

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

Front

What is a supplementary angle?

Back

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

Front

What is the relationship between vertical angles?

Back

Vertical angles are opposite angles formed by the intersection of two lines, and they are always congruent.