Are 5cm, 7cm and 9cm, the measures of a right triangle? Why?
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A right-angled triangle has one angle of 90°. The side opposite the right angle is always the longest side, and is called the hypotenuse. ... The lengths of the sides are 5cm, 7cm and 9cm. The hypotenuse is the 9cm side because it is opposite the right-angle and it is the longest side.
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