practice midsegments of triangles form answers key 2 midsegment, LM = 2 9 cm = 18 cm. Answer: LM = 18 cm. Additional Practice Tips for Mastering Triangle Midsegments Strategies to Improve Your Skills Draw accurate diagrams: Always sketch the triangle and mark midpoints carefully to visualize the problem W Webster Friesen-Ernser Dec 22, 2025