1. Angles & Parallel Lines
Geometry Unit
Chapter 7
Angles & Parallel Lines
Lesson 7.1

2. Warm Up: Draw a 157 degree angle.
How would you classify it?

3. Angle Worksheet
To Hand In!

10. Last Class...
-We talked about angles
How to measure them
Draw them
Classify them

11. Constructing Angles
To ensure accuracy, we use a compass.

12. Example: Construct a 90 degree angle.
Step 1:

13. Step 2:

14. Step 3:
*These steps ensure accuracy and can be used for any angle measure!

15. Similarly, if you were going to replicate an existing angle accurately you would:
Step 1:

16. Step 2:

17. Step 3:

18. Step 4:

19. Step 5:

20. Estimating Angle Measures

21. Angle Referents
Construct each of the following angle referents in your blue book:
45, 90, 180, 360
*Don't forget to label them

22. Now construct a refrent diagram from 0 to 360 degrees.
*Include at least ten angles you think would be helpful to use as references.

26. Definitions:

27. Example:

28. Angles can also have directions. These are called bearings.

30. Example: We write...

31. We see this on compass roses too!

32. Example:

33. Example:

34. Independent Practice:
Pages # 1 - 7
*Due tomorrow!