### Home > GC > Chapter 7 > Lesson 7.2.4 > Problem 7-72

7-72.

Use Tromika’s method from problem 7-68 to find the area of an equilateral triangle with side length

Draw an equilateral triangle.

Draw in the height of the triangle which bisects the base of the triangle. **A line segment is drawn from point B perpendicular to side A, C.**

Use the Pythagorean Theorem or the

units

Use the height to find the area of the triangle.