Base of a Polygon

Definition of Base of a Polygon

Base is the bottom of a plane or a solid.

In case of trapezoids and prisms, both the top and the bottom are called bases, as they are parallel to each other.

More About Base of a Polygon

  • The base of a two-dimensional figure is a line.
  • The base of a three-dimensional figure is a plane.

Video Examples: Base of a Polygond Math

Example of Base of a Polygon

    Two-dimensional: Circle is the base of a cone.
    Three-dimensional: Square is the base of a cube.

Solved Example on Base of a Polygon

Ques: Which of these is the base of the figure shown?

    A. BC
    B. AB
    C. AC
    D. ABC
    Correct Answer: B


    Step 1: The base of the triangle shown is the line segment AB.

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