This pdf contains:- Parallelogram Rectangle Rhombus Square Trapezoid In geometry a quadrilateral is a four-sided polygon, having four edges and four corners. The word is derived from the Latin words quadri, a variant of four, and latus, meaning "side".
1. Notes Quadrilaterals A quadrilateral is a 4-sided polygon. The sum of the measures of the four angles of any quadrilateral is 360°. Some types of quadrilaterals with which you should be familiar are shown below. Type Examples Properties ● Both pairs of opposite sides are parallel. ● Both pairs of opposite sides are congruent. Parallelogram ● Both pairs of opposite angles are congruent. ● Consecutive angles are supplementary. ● Both pairs of opposite sides are parallel. ● Both pairs of opposite sides are congruent. Rectangle ● All pairs of adjacent sides are perpendicular. ● All angles are right angles. ● Both pairs of opposite sides are parallel. ● All sides are congruent. Rhombus ● Both pairs of opposite angles are congruent. ● Consecutive angles are supplementary. ● Both pairs of opposite sides are parallel. ● All sides are congruent. Square ● All pairs of adjacent sides are perpendicular. ● All angles are right angles. ● Exactly one pair of opposite sides is parallel. Trapezoid ● Exactly two pairs of consecutive angles are supplementary.
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