Emily778
The polygons are similar, but not necessarily drawn to scale. Find the value of x.



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Emily778
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Emily778
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x = 1
x = 2
x = 4
x = 20

timo86m
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use ratios

Emily778
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I don't know how.

timo86m
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x=2

Emily778
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thankyou! How'd you do that? c:

timo86m
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use this ratio
5*x*(1/5) = 4/x
Simplifies to
x = 4/x

Emily778
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wait..is 2 or 4 the answer?

timo86m
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2

timo86m
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x = 4/x
x^2=4
x=sqrt 4
x= 2

timo86m
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Let me know if 2 is correct

timo86m
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dw:1359943602844:dw

timo86m
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the ratio is set up like this
a/c=b/d
big side over little side = big side over little side.
5*x*(1/5) = 4/x
that is where that came from.