Complex sentence: The Peirce Quincuncial Projection is a conformal map projection (except for 4 points) that presents the sphere as a square developed by Charles Sanders Peirce in 1879.
Split into simpler sentences: The Peirce Quincuncial Projection is a conformal map projection (except for 4 points) that presents the sphere as a square. It was developed by Charles Sanders Peirce in 1879.