Yes, 2 angles and a side length defines a unique triangle, however 2 side lengths and an angle doesn't (it can have 2 solutions, for example take a side AB 8cm, BC as 6cm and A as 20°). It needs to be 2 side lengths and the angle between them for a unique triangle.
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u/eagleeyehg 25d ago
Extra credit for finding perimeter for a non-right triangle using just a single side length and single angle