| A | B |
| A triangle containing a 90 degree angle | Right Triangle |
| A triangle in which all 3 angles are acute | Acute Triangle |
| A triangle containing one obtuse angle | Obtuse Triangle |
| A triangle with 0 sides congruent | Scalene Triangle |
| A triangle with at least two sides congruent | Isosceles Triangle |
| A triangle with 3 sides and angles that are congruent | Equilateral Triangle |
| Corresponding sides and angles | Parts of Congruent Triangles |
| 180 degrees | Sum of the angels of Triangles |