A parallel is a quadrilateral in which both pairs of opposite sides room parallel . the contrary angles are congruent; opposite sides space congruent; surrounding angles room supplementary;

A rectangle is a parallel with 4 right angles, so all rectangles are also parallelograms and also quadrilaterals. On the various other hand, no all quadrilaterals and also parallelograms space rectangles. A rectangle has actually all the properties of a parallelogram, to add the following:

The diagonals are congruent.

A rhombus is a parallel with four congruent sides. The plural of rhombus is rhombi . (I love that word.) A rhombus has actually all the nature of a parallelogram, to add the following:

The diagonals intersect at best angles.

A square have the right to be identified as a rhombus which is likewise a rectangle – in various other words, a parallel with 4 congruent sides and also four right angles. A trapezoid is a quadrilateral with precisely one pair that parallel sides. (There might be some confusion about this word depending on which country you"re in. In India and also Britain, they speak trapezium ; in America, trapezium usually way a quadrilateral through no parallel sides.) an isosceles trapezoid is a trapezoid whose non-parallel sides room congruent. A kite is a square with specifically two bag of nearby congruent sides. (This definition excludes rhombi. Some textbooks to speak a kite contends least two pairs of adjacent congruent sides, for this reason a rhombus is a special situation of a kite.) A scalene quadrilateral is a four-sided polygon that has no congruent sides. Three examples are presented below.

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See more: Boron-10 Protons Neutrons Electrons Are In Boron 11? What Is The Atomic Number Of Boron 10 ## Venn diagram of Quadrilateral classification

The complying with Venn Diagram mirrors the inclusions and intersections of the various varieties of quadrilaterals.