Download presentation

Presentation is loading. Please wait.

Published byKourtney Wickers Modified over 2 years ago

1
Interior and Exterior Angles of Triangles

2
Right Angle A right angle has a measurement of 90 degrees

3
Straight Angle A straight angle Has a measurement Of 180 degrees

4
Acute Angle An acute angle has A measurement of Less than 90 degrees

5
Obtuse Angle An obtuse angle has A measurement of More than 90 degrees

6
Complimentary Angles Their measures add up to exactly 90 degrees

7
Supplementary Angles Their measures add up to exactly 180 degrees

8
Finding Missing Angles 25º x x + 25 = 90

9
45ºx x + 45 = 180

10
Finding the complimentary and supplementary angles 30° Complimentary: 30 + x = 90 Supplementary: 30 + x = 180 The complimentary angle is 60⁰ and the supplementary angle is 150⁰

11
65° The complimentary angle is ___⁰ and the supplementary angle is _____⁰

12
105° In this case there is no complimentary angle, only a supplementary angle. Why?

13
Triangles

14
Finding a Missing Angle The sum of all angles in a triangle is 180 degrees. You should remember that from last year, but why?

15
Let’s Look at it Three Ways Cutting off the angles 1 2 3 1 2 3 I cut off angles 2 and 3 and lined them up to form a straight line

16
Rotating the Triangle 1 2 3 1 2 3 3 1 2 In this picture angles 1, 2, and 3 combine to make a straight line of 180⁰

17
Using parallel lines and transversals 1 2 3 231 Angle 2 by vertical angles, angles 1 and 3 by complimentary angles

18
Putting it into action

19
Your Turn

20
Finding an exterior angle -Create a straight line to solve 80⁰ + x⁰ make up the straight line. The 55⁰ and 45⁰ have nothing to do with it.

21
Your Turn 35° 55°

22
60º x

23
145º x y

24
Find all the missing angles 85° 154°

25
Closure Two angles that are supplementary add up to ______

26
Closure Two angles that are complimentary add up to ______

27
Closure A straight line is _______

28
Closure The sum of all angles in a triangle equals:

29
Closure: With a partner find all the missing angles 125° 168°

Similar presentations

Presentation is loading. Please wait....

OK

Chapter 12 and Chapter 3 Geometry Terms.

Chapter 12 and Chapter 3 Geometry Terms.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on 4 stroke petrol engine Ppt on economic order quantity ppt Ppt on regular expression in java Ppt on mcx stock exchange Ppt on four wheel car steering system Mp ppt online form 2016 Ppt on different occupations for teachers Ppt on mars one scam Ppt on network security algorithms Ppt on indian armed forces