What is an equilateral triangle?

A triangle with all three sides equal and all angles 60°.

What formulas are used?

Height = s√3/2, area = s²√3/4, perimeter = 3s.

From side length find area, height, and perimeter of an equilateral triangle.

Side length

What is an equilateral triangle?: A triangle with all three sides equal and all angles 60°.
What formulas are used?: Height = s√3/2, area = s²√3/4, perimeter = 3s.

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