Protractor and Angle Addition Postulate

m∠2 + m∠ABE = m∠DBE

• Protractor Postulate

• Angle Addition Postulate

• Segment Addition Postulate

• Transitive Property

I can measure an angle with a device known as _______

What kind of angle is this???

• right

• acute

• obtuse

• straight

What value of x proves that line p is parallel to line r?

• 14

• 12.5

• 15

• 25

Solve

Mathematical Equivalence

ON

This is what kind of angle?

• obtuse

• right

• straight

• acute

• x = 118

• x = 108

• x = 28

• x = 58

• x = 62