1. Missing Sides of Right Triangles from Altitudes Revisited

2. Note Card You should have two note cards cut into triangles. Tape one triangle into your notebook and label it as follows Construct the altitude from angle C to the opposite side. Label the point where the altitude intersect the other side D. Copy onto other triangle.

3. Continued… Label your notecard in your notebook as follows. Cut your other notecard Label x, y, and h on both sides of the other cut up notecard Cut your notecard along the altitude. Lay the two cut triangles on top of the large triangle in your notebook. What do you notice?

4. Similarity & Proportions

5. Solve Each

6. Find x Pick another side of a triangle that x shares a side with. What side is x compared to that other side? Find a known side that x corresponds with from a different triangle. Find the last unknown piece to write the proportion. Solve to find x

7. Write proportions and find the other sides.

8. Write a proportion and solve for x.

9. Write a proportion and solve for x

10. Write a proportion and solve for x.