1 Answer

Ketobomb · Answer 1 · 2024-03-22T16:40:28+0000

Answer:

x = 9
$\sqrt{(1)/(2)}$

Explanation:

the base angles are both 45°, so both legs of the isosceles triangle = x

9² = x² + x² = 2x² Pythagorean theorem

x² = 9²/2

x = √(9²/2) = 9√(1/2)

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