Question

Q 12 pls help. . .......

Answer 1

Similarity is just the scaling of an object to a factor. If you divide the the perimeter of 2 triangle you'll end up with the scaling factor.

Answer 2

We know that if two triangles are similar then the ratio of their corresponding sides are equal.

Hence, if triangle ABC is similar to triangle PQR, we have:

AB/ PQ = BC/ QR = AC/ PR

 

Now, using a property of ratios, we have:

AB/ PQ = BC/ QR = AC/ PR = AB+BC+CA/ PQ+QR+PR

 

Hence, the ratio of the perimeters of two similar triangles is the same as the ratio of their corresponding sides.

hope this is help you