1. Polygons with four sides
Quadrilaterals
Polygons with four sides

2. Types of Quadrilaterals
Square: Quadrilateral with four equal sides and four right angles (90 degrees)
Indicates equal sides
Box indicates 900 angle

3. Types of Quadrilaterals
Rectangle: Quadrilateral with two pairs of equal sides and four right angles (90 degrees)
Indicates equal sides
Box indicates 900 angle

4. Types of Quadrilaterals
Parallelogram: Quadrilateral with opposite sides that are parallel and of equal length and opposite angles are equal
Indicates equal sides

5. Types of Quadrilaterals
Rhombus: Parallelogram with four equal sides and opposite angles equal
Indicates equal sides

6. Types of Quadrilaterals
Trapezoid: Quadrilateral with one pair of parallel sides
Parallel sides never meet.

7. Types of Quadrilaterals
Irregular shapes: Quadrilateral with no equal sides and no equal angles

8. Name the Quadrilaterals1 3 2
irregular
rhombus
rectangle 5 6 4
parallelogram
trapezoid
square

9. Classifying Quadrilaterals
Judging by appearance, classify each quadrilateral in as many ways as possible:
Square
Rectangle
Rhombus
Parallelogram
Quadrilateral
Parallelogram
Quadrilateral

10. Classifying Quadrilaterals
Judging by appearance, classify each quadrilateral in as many ways as possible:
Rectangle
Parallelogram
Quadrilateral

11. Classifying Quadrilaterals
Judging by appearance, classify each quadrilateral in as many ways as possible:
Rhombus
Parallelogram
Quadrilateral
Trapezoid
Quadrilateral

12. Interior Angles
Interior angles: An interior angle (or internal angle) is an angle formed by two sides of a simple polygon that share an endpoint.
SUPER IMPORTANT!!!! MEMORIZE!
Interior angles of a quadrilateral always equal 360 degrees