"The name “tessellation” comes from “tessera”, the word for a small, usually square, stone tile used to make mosaics",

"The name “tessellation” comes from the Latin word “tessera”, the word for a small, usually square, stone tile used to make mosaics.",

"Parallel lines can intersect in non-Euclidean spaces.",

"Any B-Spline curve segment whose knots are either 0 or 1 in equal parts is also a Bézier curve.",

"The boundary of a boundary is empty.",

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@@ -7,7 +7,7 @@

"A Klein bottle can be built by gluing two Möbius bands together along their boundaries.",

"The cycles of the co-tree of a dual minimum spanning tree of a watertight triangle mesh cut that mesh into a topological disk.",

"Transition functions between charts of an integer grid map always contain a translation by an integral offset.",

"There are only five Platonic solids: Tetrahedron, hexahedron, octahedron, dodecahedron, icosahedron",

"There are only five Platonic solids: Tetrahedron, hexahedron, octahedron, dodecahedron, icosahedron.",

"The diameter of a circle always subtends a right angle to any point of the circle.",

"Filling a non-regular hole of valence <i>n</i> in a cubic manifold B-spline with <i>n</i> bicubic Bezier patches with <i>G<sup>1</sup></i> continuity is impossible in general if <i>n</i> is even.",

"A closed, regular quad mesh is a topological torus."