Fundamentals of Math - old

Fundamentals of Mathematics

5.4 Properties of Quadrilaterals A quadrilateral is defined as any closed figure with four sides and four angles. There are three main types of quadrilaterals: parallelograms , trapezoids , and kites . Quadrilaterals can be further categorized into a rectangle , rhombus , or square . Similarly, trapezoids can be broken down into isosceles trapezoids . The length of the sides and their corresponding angle measurements are what give the quadrilateral its classification.

Trapezoids Kite

Properties of Quadrilaterals

Square

Isosceles

Rhombus

Rectangle

Trapezoid

Parallelogram

All Sides are equal

√

√

Opposite Sides are equal

√

√

√

√

Sides

Opposite Sides are parallel

√

√

√

√

√

√

All angles are equal

√

√

Angles

Opposite angles are equal

√

√

√

√

Sum of two adjacent angles is 180

√

√

√

√

Bisect each other

√

√

√

√

√

Diagonals

Bisect perpendicularly

√

√

√

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