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Equilateral Triangle

See how to find the height/area of an equilateral triangle.
3 examples and their solutions.

Equilateral Triangle

Definition

An equilateral triangle is a triangle
whose sides are all congruent.
So its interior angles are all congruent: 60º.

Equilateral Triangle: Height

Formula


h = 32⋅a

Example

Solution

Example

Solution

Equilateral Triangle: Area

Formula


A = 34⋅a2

Example

Area?
Solution