Question

triangle abc and triangle pqr in which ab= pq and the angles at a, b, p and r are respectively 40°, 60°, 40° and 80°. prove that the two triangles are congruent.​

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Answer:

In ΔABC and ΔPQR

AB = PQ

And BC = QR

CB And RQ extended  to X and Y

∠ABX = ∠PQY

∠ABC = 180° − ∠ABX = 180°∠PQY

∠PQR = 180° −∠PQY =∠ABC

We get in both triangles 

AB = PQ

BC = QR

And ∠ABC =∠PQR

Then both triangle are congruent

i.e. ΔABC = ΔPQR