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The right triangle is one of the most important geometrical figures, used in many applications for thousands of years.

A Greek mathematician named Pythagoras developed a formula, called the Pythagorean Theorem, for finding the lengths of the sides of any right triangle. He treated each side of a right triangle as though it were a square and discovered that the total area of the two smaller squares is equal to the area of the largest square. He wrote this discovery as a formula:

where c is the hypotenuse and a and b are the other two legs of the triangle. Move your mouse over the triangle to learn more.

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 ·  Congruent figures

 ·  Similar figures

 ·  Squares and
    square roots

 ·  Right triangle

First Glance In Depth Examples Workout
First Glance   In Depth   Examples   Workout

Pythagorean theorem and right triangle facts