Perimeter of a Triangle

Equilateral TriangleIsosceles TriangleScalene Triangle

Area of a Triangle

Area of an Equilateral Triangle

Area of a Right Triangle

Semiperimeter

Heron's Formula

Circumscribed Circle in a Triangle

R = radius of the circumscribed circle.

Circle Inscribed in a Triangle

r = radius of the inscribed circle.

s = semiperimeter

Knowing the Lengths Two Sides and the Angle between them

Pythagorean Theorem

Similar Triangles

Similar Triangle Rules

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Emma

I am passionate about travelling and currently live and work in Paris. I like to spend my time reading, gardening, running, learning languages and exploring new places.

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