1. Transformations and Congruence
Opening routine
Midpoint of a segment
The endpoint A of a line
segment AB is located
in (2, 5) and the midpoint
M is in (5, 1).
Find the coordinates of
the endpoint B.

2. Topic I: Transformations and Congruence

3. Transformations and Congruence
Angle measure and angle bisector
Objective: Know precise definitions of angle, circle, perpendicular line, parallel line, and line segment, based on the undefined notions of point, line, distance along a line, and distance around a circular arc.
Essential Question: How is measuring an angle similar to and different from measuring a
line segment?

4. Transformations and Congruence
Angle measure and angle bisector
Vocabulary

5. Transformations and Congruence
Angle measure and angle bisector
Construct a copy of one angle

6. Transformations and Congruence
Angle measure and angle bisector

7. Transformations and Congruence
Angle measure and angle bisector

8. Transformations and Congruence
Angle measure and angle bisector

9. Transformations and Congruence
Angle measure and angle bisector

10. Transformations and Congruence
Angle measure and angle bisector

11. Transformations and Congruence
Angle measure and angle bisector

12. Transformations and Congruence
Angle measure and angle bisector

13. Transformations and Congruence
Angle measure and angle bisector

14. Transformations and Congruence
Angle measure and angle bisector
Construct an angle bisector

15. Transformations and Congruence
Angle measure and angle bisector

16. Transformations and Congruence
Angle measure and angle bisector
YOU DO - Independent Practice
Worksheet
Pages 19 and 20

17. Transformations and Congruence
Angle measure and angle bisector
Homework
Complete Worksheet
Pages 19 and 20

18. Transformations and Congruence
Angle measure and angle bisector
Closure
Essential Question: How is measuring an angle similar to and different from measuring a line segment?