File:Klein quartic with triangles.svg - Wikipedia

LS(3)-equivalence conditions of control points and application to spatial Bezier curves and surfaces. - Document - Gale Academic OneFile

File:Quartic Formula.svg - Wikipedia

Polyhedron - Wikiwand

Theoretical Background

File:Quartic Formula.svg - Wikipedia

Number Theory PNG Images - CleanPNG / KissPNG

File:PDNTheoremForQuadrilateralCase2.svg - Wikipedia

Klein quartic - Wikipedia

symptote

File:Conic sections with plane.svg - Wikipedia