Question

In parallelogram ABCD, one way to prove the opposite sides are congruent is to draw in auxiliary line BD, then prove triangle ABD congruent to triangle CDB, and use CPCTC to prove AD BC and AB DC. Which triangle congruency theorem is used to prove that triangle ABD is congruent to triangle BCD?





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SAS

ASA

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Answer 1

@Ashes.boom

Answer 2

http://www.regentsprep.org/regents/math/geometry/gp4/ltriangles.htm
Look at this real quick while i keep thinking

Answer 3

ok that helped

Answer 4

Okay cool