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anonymous
 one year ago
What is the missing step in this proof?
BAC ACB
BDE DEB
ADE DEC
BAC BDE
ABC DBE
Proof:
Statement Reason
1. given
2. Addition Property of Equality
3. using common denominators
4. AB = AD + DB
CB = CE + EB segment addition
5. Substitution Property of Equality
6. ABC DBE Reflexive Property of Congruence
7. ABC ~ DBE SAS similarity criterion
8. Corresponding angles of similar triangles are congruent.
9.  If the corresponding angles formed by two lines cut by a transversal are congruent, then the lines are parallel.
anonymous
 one year ago
What is the missing step in this proof? BAC ACB BDE DEB ADE DEC BAC BDE ABC DBE Proof: Statement Reason 1. given 2. Addition Property of Equality 3. using common denominators 4. AB = AD + DB CB = CE + EB segment addition 5. Substitution Property of Equality 6. ABC DBE Reflexive Property of Congruence 7. ABC ~ DBE SAS similarity criterion 8. Corresponding angles of similar triangles are congruent. 9.  If the corresponding angles formed by two lines cut by a transversal are congruent, then the lines are parallel.

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