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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

Math & LogicOne small ahaGeometry

Polygon with ten sides

Think it. Then flip it. ahamoraTap to reveal Back to the cue
Math & LogicOne small aha
Your new ahaDecagon

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. 17Line from a circle's centre to its edgeRECALL
    Radius

    Half the diameter

    Open this card ↗
  2. 18Angle greater than 90° but less than 180°RECALL
    Obtuse angle

    Larger than a right angle

    Open this card ↗
  3. 19Shape with six sidesRECALL
    Hexagon

    A regular one has six equal sides

    Open this card ↗