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polygons [1]click to hear

Geometric plane figures with several sides and a number of equal angles.
polygons [1] trapezoid rectangle square rhombus triangle

trapezoid click to hear

Quadrilateral with two sides (bases) that are parallel. It is isosceles when it has two sides that are equal and not parallel, and rectangle when two of its sides form a right angle.

rectangle click to hear

Quadrilateral whose opposite sides are equal in length; the sides meet at right angles.

square click to hear

Equilateral rectangle with four right angles.

rhombus click to hear

Equilateral parallelogram.

triangle click to hear

Three-sided polygon; triangles are scalene (no side is equal to any other) isosceles (two sides equal) or equilateral (all sides equal).