Hi,

Note: Perimeters of similar triangles: 

Perimeters of similar triangles are in the same ratio as their corresponding 

 sides and this ratio is called the scale factor.



If the length of a side of the larger triangle is 4. 

Find the length 

of the corresponding side of the smaller triangle.

        | Cross Multiplying to solve 

 60 = 20x



Wish You the Best in your Studies. 

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
 The perimeter of two similar triangles are 15 and 20. If the length of a side of the larger triangle is 4. Find the length of the corresponding side of the smaller triangle.

----

Use a proportion:

smaller/larger = smaller/larger

x/4 = 15/20

x = 4(3/4)

x = 3

----------------

Cheers,

Stan H.

================ 

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