original_query: What conditions must be met for a triangle to have a unique solution?
query: What conditions must be met for a plane triangle to have a unique solution?
answer: A plane triangle has a unique solution if any of the following conditions are met: three sides (SSS), two sides and the included angle (SAS), two sides and an angle not included between them (SSA) if the side adjacent to the angle is shorter than the other side, a side and the two angles adjacent to it (ASA), or a side, the angle opposite to it, and an angle adjacent to it (AAS).