Saturday, October 25, 2008

Elearn Geometry Problem 197: Triangle area

Area of a Triangle, Side, Inradius, and Exradius

See complete Problem 197 at:
www.gogeometry.com/problem/p197_triangle_area_side_inradius_exradius.htm

Area of a Triangle, Side, Inradius, and Exradius. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.
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1 comment:

  1. AnonymousOctober 25, 2008 at 6:44 PM

    referring to Elearn Geometry Problem 195,
    S=sr=(s-a)r_a
    S=(S/r-a)r_a
    S=arr_a/(r_a-r)

    ReplyDelete

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