1. Lesson 64. Drawing Polygons with 5 or More Sides

2. Drill Complete the table
No. of sides
Name of polygon 6
______________
_____
Pentagon
Nonagon 10 12
Octagon 7

3. 2. What polygon has congruent sides and angles?
Guessing Game
1. What polygon has 10 sides?
decagon
2. What polygon has congruent sides and angles?
regular polygons

4. 3. How many sides are there in dodecagon?12
4. What polygon has the least number of sides?
(triangle

5. 5. What polygon has 9 sides?
nonagon

6. Motivation: What is an angle?
How do we measure an angle?
How do we measure an angle?

7. What instrument is used to measure an angle?

8. Presentation: Present the table showing the different kinds of polygon.

9. Name of Polygon
Number of Sides
Pentagon 5
Hexagon 6
Heptagon 7
Octagon 8
Nonagon 9
Decagon 10
Undecagon 11
Dodecagon 12

10. Performing the Activities
Material : plastic straws
Mechanics :
a. Group the pupils into 4 with 3 members each..
b. Each group will be given set of plastic straws.
c. Using the plastic straws, connect the ends to form a figure
d. Paste it in a bond paper, then show to the class.

11. Summarizing the Lesson What are polygons?
Processing the Activities Call a leader to report for the group. Ask. What figure is formed? What can you say about its sides? Is it regular or irregular? Why?
Summarizing the Lesson
What are polygons?
What are different types of polygons according to the number of sides?

12. Polygons are closed plane figure that formed by the line segments that meet only at their endpoints.

13. Hexagon – 6 sides Heptagon – 7 sides Octagon – 8 sides
Examples of polygons are:
Pentagon – 5 sides
Hexagon – 6 sides
Heptagon – 7 sides
Octagon – 8 sides
Nonagon – 9 sides
Decagon – 10 sides

14. . Assessment Use the grid paper to draw the following polygons.
a. pentagon
b. octagon
c. nonagon
d. heptagon
e. hexagon

15. 2. a polygon with 7 sides 3. a polygon with 9 sides
The figure is divided into smaller regions. Each region is lettered. Name the polygon formed by combining the regions.
The figure is divided into smaller regions. Each region is lettered. Name the polygon formed by combining the regions.
c f
b d e a g
i j
c f
b d e a g
i j
A. Use a square dot paper to draw the following:
1. a polygon with 6 sides
2. a polygon with 7 sides
3. a polygon with 9 sides
4. a polygon with 10 sides
5. a polygon with 11 sides
Home Activity