geometry the shape of things to come…. quadrilaterals

Geometry

The shape ofthings to come…

QuadrilatQuadrilateralserals

There are manydifferent kinds of quadrilaterals. All ofthem have certain things in common. But most importantly theyall havefour sides!

A quadrilateral that has at least one pair of parallel sides.

Trapezoid:

Opposite sides areparallel and of equal length.The opposite angles are equal.

Parallelogram:

This shape isalso a trapezoid.

Rhombus:

(It is also a parallelogram

AND a trapezoid!)

This parallelogram has fourequal sides, but does nothave four right angles.

Has two parallel pairs of linesand four right angles.

Rectangle:

(It is also a parallelogram AND

a trapezoid.)

Has two parallel pairs of lines, four right angles, and all four

sides are equal in length.

Square:

(It is also a parallelogra

m, a trapezoid,

AND a rectangle!)

TriangTrianglesles

All three sides are equal.Each angle is equal to 60°.

Equilateral Triangle:

Also called an

acute-angled

triangle.

It has a right angle (90°) inone of its corners.

Right Triangle:

Only two sides have the same length. Two angles are equal.

Isosceles Triangle:

Each side is a different length.None of the angles are equal.

Scalene Triangle: