AMC 12 2018b Problem 13
- Paper
Square has side length . Point lies inside the square so that and . The centroids of , , , and are the vertices of a convex quadrilateral. What is the area of that quadrilateral?
unitsize(120);
pair B = (0, 0), A = (0, 1), D = (1, 1), C = (1, 0), P = (1/4, 2/3);
draw(A--B--C--D--cycle);
dot(P);
defaultpen(fontsize(10pt));
draw(A--P--B);
draw(C--P--D);
label("", A, W);
label("", B, W);
label("", C, E);
label("", D, E);
label("", P, N*1.5+E*0.5);
dot(A);
dot(B);
dot(C);
dot(D);
Dataset text AMC 12 2000 to 2025. Quoted with source.
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C
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