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Home > CCG > Chapter 8 > Lesson 8.1.5 > Problem 8-56

8-56.

Find the area of an equilateral triangle with side length mm. Draw a diagram and show all work.

An equilateral triangle with sides length 20.0 millimeters. All three angles are 60 degrees. A dashed line is drawn from the upper vertex to the base forming a right angle.