Maharashtra Class 10 Answered
If the area of two similar triangles are equal then prove that they are congruent
Asked by nomansayyed78622 | 11 Mar, 2019, 09:25: PM
Expert Answer
Let Δ ABC and Δ PQR are similar triangles.
hence we have sides are in same ratio, i.e., AB = k PQ , AC = k PR , BC = k QR
Since Δ ABC and Δ PQR are similar , altitude AD and PS are also in same ratio. AD = k PS
Area of Δ ABC = (1/2) BC × AD = (1/2) (k QR ) (k PS) = k2 ΔPQR
but we are given that Δ ABC = Δ PQR , hence k2 = 1 or k = 1
hence , AB = PQ , AC = PR , BC = QR and both triangles are congruent
Answered by Thiyagarajan K | 12 Mar, 2019, 09:02: AM
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