Question 1109868
It's a right triangle.
It's an isosceles right triangle, since the 2 angles are 45 degs.
--> the short sides are equal
--> x = 8
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then, y^2 = 8^2 + 8^2 = 128
y = sqrt(128) = sqrt(64*2) = sqrt(64)*sqrt(2)
y = 8sqrt(2)