CBSE Notes, Lectures

CBSE - Mathematics - Triangles

Triangles

NCERT Exercise Exercise 6.3

In the fig 6.37, if ΔABE ≅ ΔACD, show that ΔADE ~ ΔABC.

It is given that ΔABE ≅ ΔACD.
∴ AB = AC [By cpct] ...(i)
And, AD = AE [By cpct] ...(ii)
In ΔADE and ΔABC,

AD/AB = AE/AC [Dividing equation (ii) by (i)]

∠A = ∠A [Common angle]
∴ ΔADE ~ ΔABC [By SAS similarity criterion]

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