The height of trapezoid VWXZ is 8 StartRoot 3 EndRoot units. The upper base,VW, measures 10 units. Use the 30°-60°-90° triangle
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Since , we get:
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We have
simplify
then the radical rule is used:
⇒
Now we have and
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and
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since is the half of
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<em>(-4+5=1)</em>