Need help figuring out how to determine the length of the sides of a right triangle? Need to know how to solve a matrixform linear equation in algebra? From Ramanujan to calculus cocreator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to use the Pythagorean theorem to make right triangle calculations in basic geometry.
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How To: Calculate Faster Than a Calculator

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How To: Calculate the area of a parallelogram

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1 Comment
Nice job. The Pythagorean Theorem is so helpful in Geometry
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