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| Math Central | Quandaries & Queries |
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Question from Cristal, a student: Hello :) How can i find the sides of an equilateral triangle when only given the height 10m? |
Hi Cristal,
Suppose the triangle is $ABC$ and the length of a side of the triangle is $a$ units. Let $D$ be the midpoint of $BC$ and draw a line from $A$ to $D.$
You know that $|BD| = |DC| = \frac{a}{2}.$
What do you know about the triangle $ABD$ and $ADC?$
Write back if you need more help.
Penny
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