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the number of square units needed to cover a surface

square units (sq.units)

a unit of area with dimensions 1 unit x 1 unit


a set of symbols that expresses a mathematical rule


a repeating pattern of closed figures that covers a surface with no gaps and no overlaps


a plane shape having 3 or more straight side

regular polygon

polygon with all sides and all angles equal

irregular polygon

a polygon with all sides and all angles not equal


a quadrilateral whose opposite sides are parallel and congruent


having the same size and shape


the side of a three dimensional figure


the line made where two or more faces of a solid figure meet

vertex (vertices)

the point where two or more rays meet; the point of intersection of 2 sides of a polygon; the point of intersection of three or more edges of a solid figure; the top point of a cone


a figure formed by two rays that meet at a common endpoint


the distance around a circle


a line segment passing through the center of a circle with both ends touching the circumference


a line segment with one endpoint at the center of the circle and the other endpoint on the circle


the relationship of the circle's circumference to its diameter, when used in calculations, pi is typically approximated as 3.14

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