Study

Triangle Inequality Theorem

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  • Can these side lengths form a triangle? LM = 5 cm, MN = 7 cm, NL = 4 cm
    Yes
  • Can these side lengths form a triangle? ST = 8 ft, TU = 15 ft, US = 4 ft.
    No
  • Can these sides form a triangle? XY = 9 in, YZ = 8 in, XZ = 15 in.
    Yes
  • Can these side lengths form a triangle? UV = 4 in, VW = 3 in, UW = 9 in.
    No
  • Can these side lengths form a triangle? PQ = 5 m, QR = 12 m, PR = 8 m.
    Yes
  • Can these side lengths form a triangle? DE = 7 cm, EF = 9 cm, FD = 15 cm.
    Yes
  • Can these side lengths form a triangle? EF = 10 ft, FG = 3 ft, GE = 20 ft.
    No
  • Can these sides form a triangle? AB = 3 cm, BC = 5 cm, AC = 9 cm.
    No