Learning goals: Teacher Facing Draw triangles with two given side lengths and one angle measure or three given angle measures, and describe (orally) how many different triangles could be drawn with the given conditions. Use drawings to justify (in writing) whether two given side lengths and one angle measure determine one unique triangle. Full lesson plan (warm-up, activities, synthesis, cool-down prompt) from 7.7 Angles, Triangles, and Prisms, Grade 7.