Classifying Quadrilaterals

Right Angles are angles that are made when two sides meet to create a PERFECT corner.

You can find right angles all around you! Look around, do you see any??

Right Angles are angles that are made when two sides meet to create a PERFECT corner.

You can find right angles in common shapes like SQUARES and RECTANGLES!

Shapes that have no gaps or overlaps between the straight sides are called polygons!

The picture show is two examples of shapes that are not polygons.

**Polygons have 3 or more STRIAGHT SIDES

***Polygons do not have GAPS anywhere

polygons with four straight sides are called quadrilaterals

Parallel Lines are lines that will NEVER cross or touch each other!

A rectangle has (2) sets of Parallel lines.

For Example:

Side A is parallel to side B

and

Side C is parallel to side D

Some Figures have four sides but only 1 set of Parallel Lines

A rhombus may not have any right angles, BUT it does have (2) sets of Parallel lines!

**Remember a "set" means two, just like a "pair" means two

These are four-sided figures that have EXACTLY two sets of Parallel Lines.

ALL squares can also be classified as parrallelogram because squares have (2) sets of Parallel Lines!

• Polygons have 3 or more Straight Angles.

• No Open gaps and no curves.

• Closed

• Can not be round/circl

The point where sides meet to make a "perfect" corner an angle.

Parallel sides are straight lines that will never cross or touch