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A line through D on AB parallel to BC meets AC at E. A… | StemPy Lab

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A line through D on AB parallel to BC meets AC at E. A line through E parallel to DC meets AB at F. AF = 4 cm and AB = 25 cm. Find AD.

MathematicsHardHigh School (9–10)GeneralGeometry › Triangles Olympiad SAT

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A line through $D$ on $AB$ parallel to $BC$ meets $AC$ at $E$ . A line through $E$ parallel to $DC$ meets $AB$ at $F$ . $AF = 4$ cm and $AB = 25$ cm. Find $AD$ .

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← On the side AB of triangle ABC a point D is chosen with AD : DB = 1 : 3. A point E on AC has DE ∥ BC. A point F on AB has EF ∥ CD. If AB = 16 cm, how long is AF?EFGH is a trapezium with EF ∥ HG, and its diagonals meet at O. EO = (3x - 1) cm, OG = (5x - 3) cm, FO = (3x - 2) cm and OH = (6x - 5) cm. Find x. →

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