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Classifying Quadrilaterals

Classifying Quadrilaterals

Author: Craig Nelson

To explain the features of different quadrilaterals and how they are related.

A visual explanation of the features of different quadrilaterals.

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Words to Know

  • Parallelogram - A parallelogram is a quadrilateral that has two sides that are equal and parallel to their opposing sides.

  • Rhombus - A rhombus is a quadrilateral that is a diamond shape.  Rhombus' are parallelograms that have four equal sides.

  • Trapezoid - A trapezoid is a quadrilateral with one pair of parallel sides.

  • Isosceles Trapezoid - An isosceles trapezoid is a quadrilateral with one pair of opposing sides that are equal and another pair of opposing sides that are parallel.

  • Kite - A kite is a quadrilateral with two pairs of equal sides that are adjacent to eachother.

Quadrilateral Family Tree

Features of Quadrilaterals

Conditions of a Parallelogram

  • Both pairs of opposite sides of a parallelogram are equal.
  • Both pairs of opposite sides of a parallelogram are parallel.
  • The diagonals of parallelograms bisect eachother.