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An equilateral triangle has all three sides equal and all three angles equal to 60°. It is the most symmetric triangle and tiles a plane perfectly with copies of itself.

Trinn-for-trinn guide

1. 1All sides equal: a = b = c
2. 2Area = (√3 / 4) × side²
3. 3Height = (√3 / 2) × side · Perimeter = 3 × side

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