1. Lesson 1.4 Measuring and Classifying Angles

2. Objective Name, measure, and classify angles

3. Standard 1.0 Students will demonstrate understanding by identifying and giving examples of undefined terms, axioms, theorems, and inductive and deductive reasoning

4. Angle Consists of two different rays with the same endpoint.

5. Vertex Endpoints of rays in a angle

6. Angle A or The angle with sides AB and AC can also be named or

7. Example Name 3 angles

8. Degrees are the unit of measure for an angle Angles are measured in degrees because they are a portion of a circle.

9. Classify Angles Use a protractor to measure angles

10. Angle Addition Postulate If P is in the interior of, then the measure of is equal to the sum of the measures of and

11. Example Problem

12. Indy Practice

13. Congruent Angles Angles with the same measure A B

14. Angle Bisector A ray that divides an angle into two angles that are congruent

15. Example

16. Practice