Respuesta :

The triangles are similar by SSS similarity criterion:
Let, the first triangle = Δ ABC
Second triangle = Δ PQR

then, Δ ABC = 3 × Δ PQR

Their sides are proportional to each other, and gives three when dividing smaller triangle side with corresponding side of larger triangle

Hope this helps!
olemakpadu
The criterion is that:

The ratio of corresponding sides of both triangles are the same.

8/24 = 1/3

4/12 = 1/3

12/36 = 1/3

So both triangles are similar, because ratio of corresponding sides are the same.

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