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Solve for x.  The polygons in each pair are similar.

 

scale factor from A to B = 1:3.

 

 Feb 25, 2021
 #1
avatar+8462 
+1

\((2x - 16) : 12 = 1 : 3\\ 2x - 16 = 4\\ x = 10\)

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 Feb 25, 2021
 #2
avatar+114511 
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OR

If the scale factor of the area is 1:3

then the scale factor of the side length is 1:sqrt(3)

 

so

\(\frac{\sqrt3}{1}=\frac{12}{2x-16}\)

 

now solve it for yourself.

 Feb 28, 2021

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