The area of the equilateral triangle
Find the area of an equilateral triangle if it has side l = 2 cm.
Fill in here √3 cm2
Remember !
Properties of the equilateral triangle.
The equilateral triangle has equal sides and angles and the angle is 60°
The perimeter of an equilateral triangle is equal to the sum of the sides.
The equilateral triangle has all the congruent midlines.
Abbreviations: A - equilateral triangle area and h - equilateral triangle height.
A =
a2√3/4
h =
a√3/2
