AD = BD (CPCTE)
CD = CD (reflexive)
< ADE = < BDE (CPCTE)
<CDA supplementary to <ADE
<CDB supplementary to < BDE
<CDA = <CDB (supplementary to equal angles)
ACD congruent to BCD SAS
Nicole W.
asked 04/26/21Given: △ADE≅△BDE.
Prove: △ACD≅△BCD
all given used in step 1. C
D
A E B
AD = BD (CPCTE)
CD = CD (reflexive)
< ADE = < BDE (CPCTE)
<CDA supplementary to <ADE
<CDB supplementary to < BDE
<CDA = <CDB (supplementary to equal angles)
ACD congruent to BCD SAS
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