Johannes Hevelius
Triangulum Minus (Latin for the "Smaller Triangle") was a constellation created by Johannes Hevelius. Its name is sometimes wrongly written as Triangulum Min"or". It was formed from the southern parts of his "Triangula" (plural form of "Triangulum"), but is no longer in use. The triangle was defined by the fifth-magnitude stars 6 Trianguli, 10 Trianguli, and 12 Trianguli.