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Equilateral Triangle

Equilateral Triangle

A triangle with three congruent sides.

Note: An equilateral triangle is also equiangular. In Euclidean geometry, the angles of an equilateral triangle each measure 60°.

 

Equilateral Triangle

s = length of a side

Formula: Area equals s squared times square root of 3, divided by 4

 Equilateral triangle with all three sides labeled "s", indicating equal side lengths.

 

See also

Isosceles triangle, scalene triangle, area of an equilateral triangle