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"Mary"
Posts:
3
Registered:
3/11/10


Beautiful Geometry Puzzle
Posted:
Oct 27, 2010 12:43 AM


>> Sujeet, >> >> Once again, I cannot quite follow your proof. (I do agree with your >> solution.) I see why point M must be inside triangle ABC and why angle >> CBM >> = 10 degrees, but I do not see how the given and constructed angles show >> that angle BCM = 20 degrees. (Again, I agree that angle BCM = 20 degrees, >> but I cannot tell which statements justify this conclusion.) >> >> I have supposed that the vertices A, B, C, D are in counterclockwise >> order, but I believe that the same reasoning would apply if they are >> considered to be in clockwise order. >> >> Are my questions clear? Can you help me? Thank you for any response. >> Mary Krimmel



