Set on the eve of Flatland's first mission into their 'outer-space,' the story presents the intriguing mysteries of triangles with angle sums greater than 180 degrees and flipping into dimensions that are literally out of this world.
1965
2020
2019
1999
1957
2011
2024
1994
2013
2023
2001
2015
2014
2010
2009
1997