See complete Problem 52

Triangle, angles, incircle. Level: High School, SAT Prep, College geometry

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## Monday, May 19, 2008

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Elearn Geometry Problem 52

## Link List

Online Geometry theorems, problems, solutions, and related topics.

See complete Problem 52

Triangle, angles, incircle. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

Subscribe to:
Post Comments (Atom)

join F to E, to O, join D to E, to O

ReplyDeletename K, FE meet AO, L DE meet CO

GOH - GOF - DOH + B = 180 (from kite BFOD)

AOC + GEH - GEF - DEH = 180 (from kite EKOL)

=>

GOH - GOF - DOH + B = AOC + GEH - GEF - DEH

GOH = AOC ( as vertikales angles)

GEF = GOF ( AGFO & AGFE cyclic, see P39)

DEH = DOH ( CODH & CEDH cyclic, see P39)

=>

GEH = B

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