# SAT Right Triangles - Pythagorean Theorem

Geometry Level 1

Which of the following CANNOT be the lengths of the sides of an obtuse triangle?

(A) $$\ \ 5, 6, 10$$
(B) $$\ \ 6, 6, 6\sqrt{2}$$
(C) $$\ \ 6, 8, 11$$
(D) $$\ \ 10, 15, 20$$
(E) $$\ \ 20n, 30n, 40n$$

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