Please help! I really need it!
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Answer:
C : 4√2
Step-by-step explanation:
An triangle has two sides of equal right angles
We call the perpendicular side a, the isosceles triangle FGD at G
According to the Pythagorean Theorem
FH = √FG² + GH² = √a²+ a² => a√2 = 8
⇒a = 4√2