Protractor Postulate

Read pages 89-90 in Geometry.

Review: look at demonstration of degrees in an angle

Words to Know:

• degree
• coordinate
• acute, right, obtuse, straight angles

To Do;

• Here's a practice test measuring with a protractor.
• Test your knowledge of angle types

Exercises:

In Set I, if a protractor is placed as described in the book, then 30 and 75 are called "coordinates" and the measurement of ABC is 75- 30=45. Does that make sense?

Try #10-13

You will need to know the difference between the symbols, which is on the top of page 90.

Do #14-19

SET II:

Do #30-35