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

Front

If two angles are adjacent, what can be said about their measures?

Back

The measures of two adjacent angles can be added together to find the measure of the larger angle that they form.

Front

How do you find the measure of an unknown angle using the Angle Addition Postulate?

Back

To find the measure of an unknown angle, you can subtract the measures of the known angles from the total measure of the larger angle.

Front

What is the sum of the measures of angles around a point?

Back

The sum of the measures of angles around a point is 360 degrees.

Front

What is the sum of the measures of angles on a straight line?

Back

The sum of the measures of angles on a straight line is 180 degrees.

Front

If angle HIJ measures 164 degrees and angle WIJ measures 140 degrees, how do you find angle HIW?

Back

Use the Angle Addition Postulate: angle HIW = angle HIJ + angle WIJ - 180 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

How can you determine if two angles are vertical angles?

Back

Two angles are vertical angles if they are opposite each other when two lines intersect.

Front

What is the measure of a right angle?

Back

A right angle measures 90 degrees.