1. Lesson #45
Naming Polygons

2. By
Ian Graven Of
803

3. These are all polygons.
A polygon is a 3 or more straight-sided figure

4. These are not polygons
These all have at least 1 rounded side.

5. Here are some special polygons.
rectangle
square
A rectangle is a square which
the 4 sides are not the same.
A square has 4 sides and angles that are the same.

6. Rhombus parallelograms
A rhombus is a square tilted. That means that all the sides are the same but the angles are not the same.
A parallelogram is a rectangle tilted. That means that 2 sides are the same and the other 2 are the same but they all have different angles.Opposite sides are parallel.

7. Trapezoid Dart A dart is a 4 sided figure in the shape of a arrowhead.
A 4 sided figure with a set of parallel bases.

8. Kite
A kite is a figure with one line of symmetry.

9. There are many types of polygons
The way you find out the type of a polygon is by counting the number of sides
A 3 sided polygon is called a triangle

10. A 4 sided polygon is called a quadrilateral

11. A 5 sided polygon is called a pentagon

12. A 6 sided polygon is called a hexagon
A 7 sided polygon is called a heptagon

13. Then there is an octagon which has 8 sides
Nonagon = 9 sides
Decagon = 10 sides

14. Here is a review of the polygons
Triangle 3
Quadrilateral 4
Pentagon 5
Hexagon 6
Heptagon 7
Octagon 8
Nonagon 9
Decagon 10

15. Here are some example questions
Name this shape

16. The answer is a pentagon because this shape has five sides

17. Or the question could be
What is the name of the polygon with 5 sides

18. The answer is pentagon because a pentagon has 5 sides

19. And now… 10
Practice
Questions

20. Question # 1
Name this shape.
A: quadrilateral
B: triangle
C: octagon

21. Question # 2 Which figure has 7 sides? A: heptagon B: hexagon
C: octagon

22. Question # 3 Which figure has 9 sides? A: decagon B: pentagon
C: nonagon

23. Question # 4
Name this shape.
A: quadrilateral
B: hexagon
C: pentagon

24. Question # 5
Name this shape.
A: heptagon
B: hexagon
C: octagon

25. Question # 6 What figure has 8 sides? A: decagon B: octagon
C: heptagon

26. Question # 7
Name this shape.
A: hexagon
B: heptagon
C: octagon

27. Question # 8 What figure has 3 sides? A: quadrilateral B: triangle
C: nonagon

28. Question # 9 What figure has 6 sides?
A: pentagon B: hexagon C: heptagon

29. Question # 10
Name this shape.
A: nonagon
B: decagon
C: octagon

30. And Now..
The Answers
Prepare Yourself !

31. Question # 1 Name this shape. A: quadrilateral B: triangle C: octagon
The answer is A

32. Question # 2 Which figure has 7 sides? A: heptagon B: hexagon
C: octagon
The answer is A

33. Question # 3 Which figure has 9 sides? A: decagon B: pentagon
C: nonagon
The answer is C

34. Question # 4 Name this shape. A: quadrilateral B: hexagon C: pentagon
The answer is C

35. Question # 5 Name this shape A: heptagon B: hexagon C: octagon
The answer is C

36. Question # 6 What figure has 8 sides? The answer is B A: decagon
B: octagon
C: heptagon

37. Question # 7 Name this shape. A: hexagon B: heptagon C: octagon
The answer is B

38. Question # 8 What figure has 3 sides? A: quadrilateral B: triangle
C: nonagon
The answer is B

39. Question # 9 What figure has 6 sides?
A: pentagon B: hexagon C: heptagon
The answer is B

40. Question # 10 Name this shape. The answer is A A: nonagon B: decagon
C: octagon

41. The
End