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imc

geometry intermediate

Problem

Points and lie, in that order, on , dividing it into five segments, each of length 1. Point is not on line . Point lies on , and point lies on . The line segments and are parallel. Find .
(A)
(B)
(C)
(D)
Solution
First we can draw an image. Since and are parallel, triangles and are similar. Hence, . Since and are parallel, triangles and are similar. Hence, . Therefore, . The answer is .
Final answer
D