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Find the leg of each isosceles right triangle when the hypotenuse is of the given measure.

Given = 8 cm

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1 Answer

4 votes

Remember that

An isosceles triangle has two equal sides

In this problem

we have an isosceles right triangle

that means

the measures of the interior angles are 45-90-45 degrees

the length sides of the legs (perpendicular sides) are equal

see the figure below to better understand the problem

Applying the Pythagorean Theorem


\begin{gathered} 8^2=a^2+a^2 \\ 8^2=2a^2 \\ 2a^2=64 \\ a^2=32 \\ a=√(32) \\ simplify \\ a=4√(2)\text{ cm} \end{gathered}

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User SABANTO
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