Intro to Two Column Proofs

The last statement is <4 = <6. What is the last reason

• Prove

• Definition of congruent angles

• Transitive Property

• Alternate Interior Angles Theorem

Which proof is incorrect?

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What is the reason for Statement 4?

• Substitution

• Converse of Alternate Exterior Angles Theorem

• Converse of Corresponding Angles Postulate

• Converse of Same-side Interior Angles Theorem

What is statement #2?

• ∠ABC≅∠EDC

• ∠BCA≅∠DCE

• BC≅CD

• ∠E≅∠A

What are you being asked to prove in this problem?

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What is a given in this problem?

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What are you being asked to prove in this diagram?

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Which reasoning could you use to support your statement?

• reflexive property

• given

Which reasoning could you use to support your statement?

• reflexive property

• given

What is statement #3?

• FH≅FH

• GF≅GF

• IH≅IH

• GF≅FI