Angle pairs
Are [math]\angle[/math]ABD and [math]\angle[/math]CBD adjacent?
Name two angles that are not adjacent.
Write the angle addition postulate for the picture.
Draw an angle that is complementary to the given angle. Draw an angle that is supplementary to the given angle.
What are complementary angles and supplementary angles?
Complementary angles are two angles that add up to equal 90.[br]Supplementary angles are two angles that add up to equal 180.
If an angle measures 34 degrees, what is the complement of the angle and the supplement of the angle?
complement of 34 degrees = 90-34 = 56 degrees[br]supplement of 34 degrees = 180-34 = 146 degrees
Find the measure of the four angles in the picture.
Move point A, B, C, or D around and write down any patterns that you see.
What are angles AED and CEB called? What is so special about that type of angle?
Angles AED and CEB are called vertical angles. Vertical angles are always congruent.
What are angles AED and DEB called? What is so special about those two angles?
Angles AED and DEB are called linear pairs. Linear pairs are supplementary.
m[math]\angle ACB[/math]=______
180
What is the measure of [math]\angle[/math]ACD?
m[math]\angle[/math]AED=________
m[math]\angle[/math]DEB=______
Close
Check
Try again
Information: Angle pairs