Download presentation

Published byDamian Tyler Modified over 2 years ago

1
Objectives: SWBAT Classify polygons SWBAT determine the sum of the measures of the interior angles of a polygon SWBAT determine the measure of one interior angle of a regular polygon

2
**Polygon – simple, closed figure formed by three or more line segments**

Polygon – simple, closed figure formed by three or more line segments . Segments intersect only at endpoints. 1

3
**1 How are polygon’s classified? octagon decagon hexagon**

By the number of sides they have octagon decagon hexagon 1

4
**1 What are regular polygons?**

A polygon that has all sides congruent and all angles congruent. 1

5
**Determine whether the figure is a polygon**

Determine whether the figure is a polygon. If it is, classify the polygon. If it is not a polygon, explain why. The figure has 5 sides that only intersect at their endpoints. Answer: It is a pentagon.

6
**A B C D Classify the polygon. A. nonagon B. regular hexagon**

C. Regular heptagon D. regular pentagon A B C D

7
**A B C D Which best describes the figure? A. hexagon; regular**

B. hexagon; not regular C. octagon; regular D. octagon; not regular A B C D

8
**A B C D Which best describes the figure? A. polygon; regular**

B. cone; regular C. quadrilateral; not regular D. not a polygon A B C D

9
**A B C D Which best describes the figure? A. hexagon; not regular**

B. pentagon; not regular C. pentagon; regular D. not a polygon A B C D

11
**Find the sum of the measures of the interior angles of a heptagon.**

1260° B ° C ° D ° Read the Test Item The sum of the measures of the interior angles is (n – 2)180. Since a heptagon has 7 sides, n = 7.

12
Solve the Test Item (n – 2)180 = (7 – 2)180 Replace n with 7. = 5 ● 180 Simplify. = 900 Multiply. The sum of the measures of the interior angles of a heptagon is 900°. Answer: The answer is C.

13
**A B C D What is the sum of the interior angles of an octagon? A. 540°**

14
**A B C D What is the sum of the interior angles of a 25-gon ? A. 540°**

15
**TRAFFIC SIGNS A stop sign is a ___________ ___________.**

What is the sum of the measures of the interior angles in a stop sign? What is the measure of one interior angle in a stop sign? Divide the sum by 8 to find the measure of one angle. 1080 ÷ 8 = 135 Answer: So, the measure of one interior angle in a stop sign is 135°.

16
**A B C D Find the measure of each interior angle of a regular decagon.**

17
**PICNIC TABLE A picnic table in the park is a regular hexagon**

PICNIC TABLE A picnic table in the park is a regular hexagon. What is the measure of one interior angle in the picnic table? A. 720° B ° C. 120° D. 108° A B C D

Similar presentations

OK

Lesson Menu Main Idea and New Vocabulary NGSSS Example 1:Classify Polygons Key Concept:Interior Angle Sum of a Polygon Example 2:Sum of Interior Angle.

Lesson Menu Main Idea and New Vocabulary NGSSS Example 1:Classify Polygons Key Concept:Interior Angle Sum of a Polygon Example 2:Sum of Interior Angle.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Download ppt on oxidation and reduction in cellular Ppt on partnership act 1932 Ppt on chapter 3 drainage tile Download ppt on companies act 2013 Ppt on db2 introduction to computer By appt only-movie Ppt on good engineering practices Ppt on natural disasters for kids 20 slides ppt on global warming Ppt on earthquake download