Question

The triangle below is equilateral. Find the length of side x in simplest radical

form with a rational denominator.
5

Answer 1

x = 10

Explanation:

In an equilateral triangle, the altitude, or height is also the median and angle bisector. So, we can say a side of the equilateral triangle is 2 x 5 or 10. Every side of an equilateral triangle is congruent, so x is 10.