What other information do you need in order to prove the triangles congruent using the SAS Congruence Postulate?
2 answers:
Answer:
<CBA = <CDA
Step-by-step explanation:
Using <CBA = <CDA and Base angle theorem, you can say that AB = AD.
Now you have <CBA = <CDA, AB = AD, and CB = CD. These prove SAS.
Answer:
Option D.
Step-by-step explanation:
Given information: 
Property of isosceles triangle : In a triangle, if two angles are congruent, then sides opposite those angles are congruent.
If
, then
.
Let as consider
is given.
In triangle ABC and CDA
(Given)
(Given)
(Property of isosceles triangle)
Two sides of a triangle and included angle are congruent to corresponding sides and included of another triangle.
(By SAS)
Therefore, the correct option is D.
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