  # How to find a missing length of a triangle

To find the hypotenuse of a right triangle, use the Pythagorean Theorem. Start with the two known sides and use the famous formula developed by the Greek mathematician

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In the left triangle, the measure of the hypotenuse is missing. Use the Pythagorean theorem to solve for the missing length. Replace the variables in the theorem with the values

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## Triangle missing side example (video)

How to Find the Missing Side Length Given Two Similar Triangles Step 1: Given a pair of similar triangles, determine which sides correspond to each other. The smallest side of the first

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## How to Solve for a Missing Right Triangle Length

Where a and b are two sides of a triangle, and c is the hypotenuse, the Pythagorean theorem can be written as: a 2 + b 2 = c 2. EX: Given a = 3, c = 5, find b: 3 2 + b 2 = 5 2. 9 + b 2 = 25. b 2 = 16

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