Angle Pairs
Visual proof that $ \angle{BCA} + \angle{DCE} = \pi / 4 $ or alternatively $ \arctan \left( \dfrac{u-v}{u+v} \right) + \arctan \left(\dfrac{v}{u}\right) = \p...
pythagorean triple
10/17 Pythagorean Triples
12-triangles-and-their-link-to-pythagorean-triples The inspiration for this week was a puzzle from the recent Pythagorize Seattle event thrown by MoMath that...
1:2 triangles and their link to Pythagorean triples
I’ve mentioned before how instinctively it feels like the 1:2 triangle ought to have a more natural angle measure. In fact its in a 90 - 26.57 - 63.43 degree...