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Pythagorean theorem

Learn
Intro to the Pythagorean theoremPythagorean theorem examplePythagorean theorem intro problemsUse Pythagorean theorem to find area of an isosceles triangle
Learn
Use Pythagorean theorem to find area of an isosceles trianglePythagorean theorem word problem: carpetPythagorean theorem word problem: fishing boatPythagorean theorem in 3D
Practice
Use Pythagorean theorem to find perimeterGet 3 of 4 questions to level up!
Pythagorean theorem word problemsGet 3 of 4 questions to level up!
Pythagorean theorem in 3DGet 3 of 4 questions to level up!
Learn
Finding distance with Pythagorean theoremDistance formulaDistance formulaDistance formula review
Practice
Distance between two pointsGet 5 of 7 questions to level up!
Learn
Garfield's proof of the Pythagorean theoremBhaskara's proof of the Pythagorean theoremPythagorean theorem proof using similarityAnother Pythagorean theorem proof

About this unit

The Pythagorean theorem describes a special relationship between the sides of a right triangle. Even the ancients knew of this relationship. In this topic, we’ll figure out how to use the Pythagorean theorem and prove why it works.