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angelicapad

  • 2 years ago

The altitude of an equilateral triangle is 7 root 3 units long. The length of one side of the triangle is ____ units. A. 7 B. 14 C. 14 root 3 D. (7 root 3) /2

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  1. ash2326
    • 2 years ago
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    @angelicapad All sides are equal for an equilateral triangle, altitude for an equilateral triangle is also the median. So altitude will the half the side. See the diagram|dw:1352702635737:dw| all sides are equal let, them be a and we have the altitude as \(7\sqrt 3\) In triangle ABD AB=a AD=\(7\sqrt 3\) BD=a/2 ABD is a right triangle, can you find a now?

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