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: