The document discusses similarity in right triangles and the geometric mean. It states that if an altitude is drawn to the hypotenuse of a right triangle, the two new triangles formed are similar to the original and to each other. It also notes that the length of the altitude is the geometric mean between the segments of the hypotenuse, and each leg is the geometric mean between the hypotenuse and adjacent hypotenuse segment.

1. Right Triangles 8-1 Similarity in Right Triangles

2. Review Means Extremes Means

3. Geometric Mean The geometric mean between a and b is x if you do this: What is x?