Tuesday, November 4, 2008

Elearn Geometry Problem 201: Right Triangle, Excircles, Semiperimeter

Triangle, Altitude, Angles

See complete Problem 201 at:
www.gogeometry.com/problem/p201_right_triangle_tangent_excircle.htm

Right Triangle, Excircles, Points of Tangency, Exradius, Semiperimeter. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.

1 comment:

  1. name K circle meet BC, L circle meet AC, T meet BA

    s = (a + b + c)/2
    s = (EB + CD + AC + r - EB) ( EB=BK,KC=CD,)
    s = (2r)/2 ( CD + AC = r )

    s = r
    ---------------------------------------------------
    BF = BH
    BF = BK + KC + CH
    BF = BE + CD + LC ( seg equal from a point )
    BF = BE + LD ( CD + LC = LD )
    BF = r - c + r - AF ( AL = AF, tg from A)
    2BF = 2r ( c + AF = BF )

    BF = r
    -----------------------------------------------------
    using CG = CM =>

    CG = r
    -----------------------------------------------------
    BF =

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