en.wikipedia.org/wiki/Quadrilateral

Some types of quadrilaterals. Edges and vertices, 4. Schläfli symbol, {4} (for
square). Area, various methods; see below. Internal angle (degrees), 90° (for
square and rectangle). In Eucli...

www.mathsisfun.com/quadrilaterals.html

A Quadrilateral has four-sides, it is 2-dimensional (a flat shape), closed (the lines
... Some types are also included in the definition of other types! ... Other Names.

www.basic-mathematics.com/types-of-quadrilaterals.html

To identify types of quadrilaterals based on sides and angles. ... sides and angles
. Parallelogram: A four-sided polygon with two pairs of parallel and equal sides.
The following is a parallelogram. ... First Name (optional). Subscribe. Your email
...

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Different types of quadrilaterals are explained with their definition and properties
along with the diagram. Parallelogram A quadrilateral is called a parallelogram.

www.reference.com/math/different-kinds-quadrilaterals-56dfcf7620c2352b

There are primarily six different types of quadrilaterals used in geometry. These
are parallelogram ... What types of quadrilaterals have four congruent sides?

www.dummies.com/education/math/geometry/identifying-the-seven-quadrilaterals/

Rhombus: A quadrilateral with four congruent sides; a rhombus is both a kite and
a ... Rectangle: A quadrilateral with four right angles; a rectangle is a type of ...

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This page is about types of quadrilateral. ... In this section we will discuss different
types of quadrilateral. Quadrilateral : It is a closed figure formed by 4 line ...

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Picking apart the name “quadrilateral” helps you understand what it refers to. The
prefix “quad-” ... A quadrilateral also has four angles formed by its four sides. ...
The other special case of a parallelogram is a special type of rectangle, a square.

www.mathcaptain.com/geometry/types-of-quadrilaterals.html

The quadrilaterals are those which are four sided closed figures. The
quadrilaterals can be classified into different types according to their properties. It
is very ...

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We name each vertex with a capital letter. Let's name our quadrilateral with the
four vertices: P, N, C, and L. It also has four sides: the segments PN, NC, CL, and
...