Intro to Two Column Proofs

What is the justification?

• Symmetric Prop.
• Angle addition postulate
• Reflexive Prop
• Transitive Prop.

AB = AB

• Reflexive POE
• Transitive POE
• Symmetric POE
• Distributive POE

• addition POE
• angle addition POE
• subtraction POE
• substitution POE

Which is the correct reason for statement 1 in the proof?

• Definition of Congruent Angles
• Substitution
• Transitive Property
• Given

If A = B, then 8A = 8B

• Multiplication POE
• Division POE
• Reflexive POE
• Addition POE

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

• Transitive POE
• Substitution POE
• Symmetric POE
• Reflexive POE

What is the missing statement in the proof?

• Subtraction p.o.e.
• Substitution p.o.e.
• Transitive p.o.e.
• Symmetric p.o.e.

If M is the midpoint of AB, then AM = MB

• Addition POE
• Def. of Midpoint 
• Reflexive POE
• Symmetric

When starting a proof you always start with:

• Given information
• What it wants you to prove
• Equal Angles
• Linear Angles

What is the missing statement in the proof?

• Addition p.o.e
• Segment Addition Postulate
• Substitution p.o.e
• Transitive p.o.e