1. Copyright 2011 Davitily

2. Finding the Area of an Equilateral Triangle
Area= 1 2 ×base×height
Step 1:
Find the base and height.
Step 2:
Multiply the base and the height.
Step 3:
Divide the answer by 2.
Step 4:
Write the units.
Step 1: The base is 14.
To find the height we must
remember the relationship
of right triangles.
Step1:
If we split the triangle in
half at the middle, we get
Step 2:
Multiply the base
and the height.
14×7 3
two 30−60−90 right triangles.
98 3
The bottom half is the short
Step 3:
Divide the answer by 2
or multiply by ½.
side of new triangle, so
98 3 ÷2
the height is the side you
49 3
multiply by 3 . Therefore
Step 4:
theheight is7 3 .
Area = units 2

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