diff --git a/Library/tips.json b/Library/tips.json
index 384550f5151fb1648bc88a6aa49500760eed8194..3972c4b8a3957fe49cd253ef3d798ce4c0478d5b 100644
--- a/Library/tips.json
+++ b/Library/tips.json
@@ -1,4 +1,5 @@
 {"tips":[
+"The name “tessellation” comes from “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.",