28. Given:12m9Prove:m18Proof:29. Given:5z1Prove:z6Proof:30. Given:XZZY,XZ4x1, and ZY6x13 Prove:x7Proof:31. Given:mACBmABCProve:mXCAmYBAProof:32. Given:EkhfWProve:fEkhWProof:33. Given:mACBmDCEProve:mACBmACGmDCEmECFProof:Thus, all of the angle measures would be equal.34.Sample answer: Michael has a symmetricrelationship of first cousin with Chris, Kevin,Diane, Dierdre, and Steven. Diane, Dierdre, andSteven have a symmetric and transitiverelationship of sibling. Any direct line frombottom to top has a transitive descendentrelationship.35.See students’ work.36.Sample answer: Lawyers use evidence andtestimony as reasons for justifying statementsand actions. All of the evidence and testimony islinked together to prove a lawyer’s case similar toa proof in mathematics.Answers should include the following.• Evidence is used to verify facts from witnessesor materials.
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