Page 721 - Basic College Mathematics with Early Integers

A.3 TABLE OF GEOMETRIC FIGURES

Plane Figures Have Length and Width but No Thickness or Depth
Name Description Figure

Polygon Union of three or more coplanar line segments
that intersect with each other only at each
endpoint, with each endpoint shared by two
segments.
Triangle Polygon with three sides (sum of measures of
three angles is 180°).

Scalene Triangle with no sides of equal length.
Triangle
Isosceles Triangle with two sides of equal length.
Triangle

Equilateral Triangle with all sides of equal length.
Triangle

Right Triangle that contains a right angle.
Triangle hypotenuse
leg

leg
Quadrilateral Polygon with four sides (sum of measures of four
angles is 360°).

Trapezoid Quadrilateral with exactly one pair of opposite base
sides parallel.
leg parallel leg
sides
base
Isosceles Trapezoid with legs of equal length.
Trapezoid

Parallelogram Quadrilateral with both pairs of opposite sides
parallel.

Rhombus Parallelogram with all sides of equal length.

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