Wednesday, January 5, 2011

Problem 563: Regular Pentagon, Center, Rectangle, Diagonals, Angle

Geometry Problem
Click the figure below to see the complete problem 563.

Problem 563: Regular Pentagon, Center, Rectangle, Diagonals, Angle.
Zoom at: Geometry Problem 563

Posted by Antonio Gutierrez at 8:19 AM
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2 comments:

  1. c .t . e. oJanuary 5, 2011 at 9:50 AM

    x = MDF + MFD = 72 + 27 ( MFD = 1/2 ODE, OD bisector )
    =>
    x = 99

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  2. UnknownJanuary 5, 2011 at 4:07 PM

    http://img202.imageshack.us/img202/508/problem563.png

    Refer to attached picture
    We have 2t=1/2*(180-72)= 54
    x=180-3t= 99

    Peter Tran

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