Question 936816
The altitude cuts the equilateral triangle into two congruent 30-60-90 special triangles, and their hypotenuse is 5 units, and either short leg is 2.5 units.  That's because the altitude cuts one of the sides into two equal parts, so {{{5/2=2.5}}}.


Pythagorean Theorem to find the altitude.
More help on this needed?



altitude is {{{5(sqrt(3)/2)}}}.