With some outside forces, a hiker realizes her unfortunate situation.
About the Small Square and the Small Triangle
Flatland
The Dot and the Line: A Romance in Lower Mathematics
Toroid
Four-Point Conics
Map Projections
Perspectives
Cube
Dimensions
Cubits
Tondo
The Art of Fugue
Keep on Turning
Rotating Cubic Grid
French Windows
M.C. Escher: Sky and Water 1
Here Come the 123s
Clouds Are Not Spheres
M. C. Escher: Journey to Infinity