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| abstraction > mathematical concept > number > quantity > equatorial sky area > constellation > Triangulum | 
| Triangulum (Triangle, Tri)  | ||||
| subject | fact | |||
| Triangulum | is a part of celestial sphere | ![]()  | 
| has genitive Trianguli | ![]()  | |
has boundary ![]()  | ![]()  | |
| has synonym Triangle | ![]()  | |
| has acronym Tri | ![]()  | |
| is an instance of constellation | ![]()  | |
| constellation | is a part of celestial sphere | ![]()  | 
| has component asterism | ![]()  | |
| has historical origin asterism with pictorial or mythical significance | ![]()  | |
| has purpose to divide the celestial sphere into small visually recognizable star classification regions | ![]()  | |
| equatorial sky area | is defined using equatorial coordinates | ![]()  | 
| quantity | has unit | ![]()  | 
| number | has value | ![]()  |