LibraryGeometry EssentialsOne card

A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaGeometry

Shape with eight sides

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Your new ahaOctagon

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. 21Volume of a rectangular prismRECALL
    length × width × height

    Measured in cubic units

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  2. 22Volume of a cylinderRECALL
    πr²h

    Base area times height

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  3. 23Number of faces on a cubeRECALL
    6

    All are squares

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