



 
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.  


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