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 Geometric Mean:  If a/x = x/b (or x2 = ab), then x is called the geometric mean between a and b. The geometric mean is sometimes called the mean proportional.

Altitude to the Hypotenuse: Investigate the relationship between sides of right triangles when an altitude is drawn to the hypotenuse of a right triangle.

Comparing the Arithmetic Mean, Geometric Mean, and Harmonic Mean: Using a graph, explore how the arithmetic mean compares to the geometric mean and the harmonic mean.

Arithmetic and Geometric Means: Visualize arithmetic and geometric means.