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SAT Study Guide

  Geometry and Measurements
  Module 3: Triangles
Perimeter and Area of an Equilateral Triangle
We shall derive the formulae for the area and perimeter of an equilateral triangle.

Perimeter: Perimeter of an equilateral triangle whose side is 'a' units = (a+a+a) units = 3a units

Area: Area of an equilateral triangle whose side is 'a' units
= a2




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