Thursday, January 20, 2011

Problem 570: Square, Center, Right Triangles, Congruence, Collinearity.

Geometry Problem
Click the figure below to see the complete problem 570.

Problem 570: Square, Center, Right Triangles, Congruence, Collinearity.
Zoom at: Geometry Problem 570

Posted by Antonio Gutierrez at 11:04 AM
Labels: , , , ,

2 comments:

  1. c .t . e. oJanuary 22, 2011 at 8:11 AM

    AHE = 45 (▲EAH isoceles)
    AHD = 90
    OHD = OAD = 45 ( A, H, O, D lie on the same circle)
    => EOH = 180 => E, H, O collinear
    BHDF paralellogram => H, O, F collinear

    ReplyDelete
  2. ggJanuary 24, 2011 at 12:44 PM

    Nice problems!

    ReplyDelete

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