The hypotenuse of a 45 degrees - 45 degrees - 90 degrees triangle measures 4 cm. What is the length of one leg of the triangle?

In a 45°-45°-90° triangle, the hypotenuse is a leg multiplied by √2. So one leg is 4 ÷ √2 = 2√2 cm. The correct choice is 2 square root of 2 cm.

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