Explores 2-D and 3-D shapes.

The quadrivium--the classical curriculum--comprises the four liberal arts of number, geometry, music, and cosmology. It was studied from antiquity to the Renaissance as a way of glimpsing the nature of reality. Geometry is number in space; music is number in time; and comology expresses number in space and time. Number, music, and geometry are metaphysical truths: life across the universe investigates them; they foreshadow the physical sciences. Quadrivium...

This video tells how the Pythagorean Theorem has been used for thousands of years to solve practical problems. Through examples found in the world around us, see how to manipulate the theorem to find the length of any side of a right triangle when the lengths of the other two sides are known.

Explains the principles of plane geometry and includes practice exercises and model problems.