1. Polygons
Not Polygons

2. What is the definition of a polygon?
Answer
A closed flat 
figure with at least 
three straight 
sides

3. Quadrilaterals
Not Quadrilaterals

4. What is the definition of a quadrilateral?
Answer
A polygon with 
four sides

5. Parallelograms
Not Parallelograms

6. What is the definition of a parallelogram?
Answer
A quadrilateral 
with two pairs of 
parallel sides

7. Rectangles
Not Rectangles

8. What is the definition of a rectangle?
Answer
A quadrilateral 
with four right 
angles and two 
pairs of parallel 
sides

9. Square
Not Squares

10. What is the definition of a square?
Answer
A quadrilateral 
with four right 
angles, two pairs 
of parallel sides, 
and all sides equal

11. Rhombus
Not Rhombus

12. What is the definition of a rhombus?
Answer
A quadrilateral 
with two pairs of 
parallel sides and 
all sides equal

13. Trapezoids
Not Trapezoids

14. What is the definition of a Trapezoid?
Answer
A quadrilateral 
with exactly one 
pairs of parallel 
sides

15. What is the definition of a regular polygon?
Answer
A polygon with all 
sides and angles 
congruent
What is the definition of 
a regular polygon?
What do we call a regular triangle?
Equilateral triangle
What do we call a regular quadrilateral?
Square

16. Classify each quadrilateral in as many ways as 
possible by dragging the terms and placing them 
on top of the shape. Terms may be used more 
than once.
trapezoid
quadrilateral
trapezoid
square
quadrilateral
square
rhombus
quadrilateral
rhombus
parallelogram
parallelogram
parallelogram
quadrilateral
rectangle
rectangle
rhombus
rectangle
quadrilateral
parallelogram

17. A polygon is convex if any two interior points can be connected 
with a segment that lies completely with in the polygon.
A polygon is concave if any two interior points cannot be 
connected with a segment that lies completely with in the polygon.
B.) Draw an example of a concave polygon
A.) Draw and example of a convex polygon.

18. The sum of the angles of a quadrilateral is 360 .
Sum of the Interior Angles of a Quadrilateral
If you draw a diagonal of a quadrilateral, you will get two triangles.
1.) Use this information to find the sum of the interior angles of a 
quadrilateral.
The sum of the angles of a quadrilateral is

19. Write an equation to find the value of x and then find the value of each missing angle.xo
(2x + 1)o