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STatiana [176]
3 years ago
12

Yash wants to prove that KA=KC. To do that, he decides to prove that△KAB≅△KCB. Which theorem or postulate can Yash use to prove

the triangles congruent?
Hypotenuse-Leg (HL) Congruence TheoremSide-Side-Side (SSS) Congruence PostulateAngle-Angle-Side (AAS) Congruence TheoremSide-Angle-Side (SAS) Congruence Postulate

Mathematics
1 answer:
marta [7]3 years ago
6 0

Observe the figure clearly.

To Prove: KA = KC

Proof:

Consider the triangles \Delta KAB , \Delta KCB

KB = KB (Common side)

\angle KAB = \angle KCB (each angle is of 90 degree)

\angle ABK = \angle KBC (As BY bisects angle ABC)

Therefore, \Delta KAB \cong \Delta KCB

By AAS congruence Theorem which states:

"If two angles and a non-included side of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent".

Hence, the given triangles are congruent by AAS congruence criteria.

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