Home Competitions AMC 12 2020a Problem 18
Quadrilateral A B C D ABCD A B C D satisfies ∠ A B C = ∠ A C D = 90 ∘ , A C = 20 \angle ABC = \angle ACD = 90^{\circ}, AC = 20 ∠ A B C = ∠ A C D = 9 0 ∘ , A C = 20 , and C D = 30 CD = 30 C D = 30 . Diagonals A C ‾ \overline{AC} A C and B D ‾ \overline{BD} B D intersect at point E E E , and A E = 5 AE = 5 A E = 5 . What is the area of quadrilateral A B C D ABCD A B C D ?
(A) 330 (B) 340 (C) 350 (D) 360 (E) 370 \textbf{(A) } 330 \textbf{(B) } 340 \textbf{(C) } 350 \textbf{(D) } 360 \textbf{(E) } 370 (A) 330 (B) 340 (C) 350 (D) 360 (E) 370
Dataset text AMC 12 2000 to 2025 . Quoted with source.
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