Question

Which congruency theorem can be used to prove that △ABD ≅ △DCA?

SSS
ASA
SAS
AAS

Answer 1

C) SAS

Explanation:

just did it on edge 2020

Answer 2

SAS

Explanation:

Given: Two triangles ΔABD and ΔDCA,

We have, AD=AD (common)

∠A=∠A (Given)

BA=CD (Sides opposite to equal angles are always equal)

With the SAS rule of congruency,

ΔABD≅ΔDCA