Mathematics - Geometry - Problem of the Week

Chapter 1	The Supernova The Moving Dominoes The Shortest Distance	Answer Answer Answer
Chapter 2	Miquel's Theorem The Curious Cube Aristotle's Wheel	Answer Answer Answer
Chapter 3	A Domino Knot The Extra Square One Into Three	Answer Answer Answer
Chapter 4	The Amazing Triangle The Cuboctahedron	Answer Answer
Chapter 5	The Nine Puzzle Are All Triangles Isosceles? A Möbius Trisection	Answer Answer Answer
Chapter 6	Square Assembly T-Squares Checks Into Stripes	Answer Answer Answer
Chapter 7	The Divisible V The Work Problem A Logarithmic Spiral	Answer Answer Answer
Chapter 8	Squaring a Greek Cross Pythagoras Without Squares A Square Proof	Answer Answer Answer
Chapter 9	An Eight-Point Star An Inscribed Circle Circular Tangrams	Answer Answer Answer
Chapter 10	The Nine-Part Triangle The Two Crescents A Construction for Pi	Answer Answer Answer
Chapter 11	Planar Pentominoes Pythagoras in 3-D Truncated Polyhedra	Answer Answer Answer
Chapter 12	The Intersecting Circles The Gothic Window	Answer Answer
Chapter 13	The Titled Ellipse Tessellated Polygons	Answer Answer