Abstract
The proportion angle of a non-square rectangle R, written ‘Pa (R)’, is defined to be the angle r < between a diagonal and the longer attached side. Circumscribe around R any other rectangle M that carries the corners of R on its sides, and let its proportion angle be m, which is also < . Then the theorem states that r < m.
Publisher
Cambridge University Press (CUP)
Reference4 articles.
1. Student problem 2008.2 solution;Math. Gaz.,2008
2. Elementary Surprises in Projective Geometry
Cited by
1 articles.
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