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Mathematics, 11.12.2019 04:31 lizzyhearts

Let abc be a triangle with centroid g. points l, m, and n are the midpoints of sides bc, ca, and ab respectively. let d be the foot of the altitude from a to bc and let k be the foot of the altitude from l to mn.

(a) show that ad/lk=2

(b) show that triangleadg is similar to trianglelkg

(c) show that d, g and k are collinear and that dg/gk=2

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