Angeles in a parallelogram

Angeles in a parallelogram

Angles in a parallelogram

• Vertical angles are congruent(the same )

• adjacent angles(Angles next to each other ) add up to 180 degrees Ex. 129 +51=180

Reading Angles

• <DAB=100 degrees(The middle letter A represents the angle.

• <ABC= 80 degrees (The middle letter tells you what angle to look at.

Practice

• If angle DAB= 100 then Angle BCD=100

• If Angle DAB=100 then Angle ADC =80 (because 100 +80 = 180 and adjacent angles have to add up to 180 degrees)

Multiple Choice

if angle DAB=65 degrees what does angle DCB equal?

• 65

• 100

• 115

Multiple Choice

What does Angle ADC=

• 65

• 115

• 100

Multiple Choice

What does Angle CBA =

• 65

• 115

• 100