Lesson 8 Angle Pairs Proofs CFU'S

Look at the red *. <MON = to? (Look at the picture points M, O, and N are collinear)

• 180

• 40

• 90

Look at the red *. If the statement at the left says <NOP+<MOP= <NOM what is the reason (where the * is)

• Angle

• Segment

• Point

What are the 2 answers for the red * in the picture, what is the values of <NOP (is given) and what do we call angles that add up to 180

• 140, Supplementary angle Definition

• 140, Complementary (90) angle Definition

• 40, Vertical angle Definition (the ones that look like an X)

Look at the red *. What operation was done with 180 and 140 to get that <MOP = 40

• Subtraction Property

• Addition Property

• Division Property

• Multiplication Property

Look at the red *, what is point L called, therefore it cuts in half

• Midpoint

• Endpoint

• Point

• Dot

Look at the red *, what allows you to say this, look at the 2 boxes above and notice how they are replacing KL

• Substitution Property

• Division Property

• Angle addition Post

What is the justification?

• Symmetric Prop.

• Angle addition postulate

• Reflexive Prop

• Transitive Prop.

AB = AB

• Reflexive Prop

• Transitive Prop

• Symmetric Prop

• Distributive Prop

If <M = <L then <L = <M

• Transitive Prop

• Substitution Prop

• Symmetric Prop

• Reflexive Prop