Consider a square with side length 2. Let be the midpoint of , the midpoint of , and and the points at which line segment intersects and , respectively.
What is the area of
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Let Vertex B be at coordinate (0,0), the equations for A F , E D and D B are y = − 2 x + 2 , y = 2 1 x + 1 and y = x respectively From here, the coordinates of P and Q are located at the intersections.
P such that 2 1 x + 1 = − 2 x + 2 → x = 5 2 and substituting back in gives y = 5 6 , and
Q such that x = − 2 x + 2 → x = 3 2 and substituting back gives y = 3 2
The Area E B Q P = A B F − A E P − B F Q = 2 1 ( 1 ) ( 2 ) − 2 1 ( 1 ) ( 5 2 ) − 2 1 ( 1 ) ( 3 2 ) = 1 − 5 1 − 3 1 = 1 5 7