Answer
$oblique$, $sides$, and $angles$.
Work Step by Step
While there are several special names for different kinds of triangles, the one that does not contain a right angle is called an $oblique$ triangle. Each triangle consists of three sides and three angles, and solving a triangle means finding the unknown lengths of its $sides$ and the unknown measurements of its $angles$. Thus, the answers to this question are: $oblique$, $sides$, and $angles$.
