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valentinak56 [21]
3 years ago
11

What other information do you need in order to prove the triangles congruent using the SAS Congruence Postulate?

Mathematics
2 answers:
Mazyrski [523]3 years ago
5 0

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.

Annette [7]3 years ago
5 0

Answer:

Option D.

Step-by-step explanation:

Given information: \overline {BC} \cong \overline {DC}

Property of isosceles triangle : In a triangle, if two angles are congruent, then sides opposite those angles are congruent.

If \angle CBA\cong CDA, then \overline {AB} \cong \overline {AD}.

Let as consider \angle CBA\cong CDA is given.

In triangle ABC and CDA

\overline {BC} \cong \overline {DC}         (Given)

\angle CBA\cong CDA                (Given)

\overline {AB} \cong \overline {AD}           (Property of isosceles triangle)

Two sides of a triangle and included angle are congruent to corresponding sides and included of another triangle.

\triangle ABC\cong \triangle ADC           (By SAS)

Therefore, the correct option is D.

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