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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaGeometry

Area of a triangle

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Math & LogicOne small aha
Your new ahabase × height ÷ 2

Lengths use linear units, areas use square units, and volumes use cubic units. Source: Geometry ↗

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More from Geometry Essentials

A few more worth knowing.

  1. 05Circumference of a circleRECALL
    2πr

    Also π times diameter

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  2. 06Area of a circleRECALL
    πr²

    r is the radius

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  3. 07Right triangle with hypotenuse c · Pythagorean equationRECALL
    a² + b² = c²

    Applies to right triangles

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