1. Geometry warm ups

2. 7-5 PROPORTIONS IN TRIANGLES

3. Side-Splitter Theorem When two or more parallel lines intersect other lines, proportional segments are formed. (Copy the picture and the Then…part)

4. Problem 1 What is the value of x? x = 3

5. Try with a Partner What is the value of a? a = 8

6. Corollary

7. Problem 2

8. Triangle-Angle-Bisector Theorem The bisector of an angle of a triangle divides the opposite side into two segments with lengths proportional to the sides of the triangle that form the angle.

9. Problem 3 What is the value of x?

10. Try on your own What is the value of y in the diagram?

11. Try with your Partner What is the value of x?

12. Homework Pg. 475 # 9 – 22 all, 38 – 40