1. Proportionality Theorems
Section 8.4

2. What You Will Learn
Use the Triangle Proportionality Theorem and its converse.
Use other proportionality theorems.

3. Using the Triangle Proportionality Theorem (Take Notes)

4. Finding the Length of a Segment

5. You Try

8. Three Parallel line Theorem(Take Notes)

9. Using the Three Parallel Lines Theorem
In the diagram, ∠1, ∠2, and ∠3 are all congruent, GF = 120 yards, DE = 150 yards, and CD = 300 yards. Find the distance HF between Main Street and South Main Street.

10. (Take Note)

11. Using the Triangle Angle Bisector Theorem

12. You Try