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Question

Find the scale factor of a similar triangle whose sides are 4,12,20 and 5,15,25

Answer 1

The scale factor of a similar triangles=

Length of first triangle's side / Length of second triangle's side

4 / 5 = 0.8

12 / 15 = 0.8

20 / 25 = 0.8

So the scale factor of the similar triangles is 0.8