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What Is The 45 45 90 Rule? [Solved]

A 45°−45°−90° triangle is a pretty common right triangle. Its sides are in the ratio of 1:1:√2, meaning one side is x, another side is x, and the last side (the hypotenuse) is x√2. Basically, the hypotenuse is √2 times longer than either of the other two sides.