Stage: 4 Challenge Level: 
We haven't received any solutions to this
one yet. Here's a copy of one of the diagrams from the Hint, and a
suggestion.
You need to show that the angle has been trisected, which would mean angles CBR, RBQ and QBP are equal. Congruent triangles may help you to show this!
You need to show that the angle has been trisected, which would mean angles CBR, RBQ and QBP are equal. Congruent triangles may help you to show this!
Generalising. Parallel lines. Mathematical reasoning & proof. Number theory. Congruence. Perpendicular lines. Inequality/inequalities. Manipulating algebraic expressions/formulae. Dynamical systems. Stage 5 - Reviewed 2012.
Published September 2000,February 2009.
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