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Which of the following sets of numbers could represent the three sides of a triangle?

{8,18,24}

{14,29,45}

{8,23,31}

{10,16,28}

Which of the following sets of numbers could represent the three sides of a triangle?\newline{8,18,24} \{8,18,24\} \newline{14,29,45} \{14,29,45\} \newline{8,23,31} \{8,23,31\} \newline{10,16,28} \{10,16,28\}

Full solution

Q. Which of the following sets of numbers could represent the three sides of a triangle?\newline{8,18,24} \{8,18,24\} \newline{14,29,45} \{14,29,45\} \newline{8,23,31} \{8,23,31\} \newline{10,16,28} \{10,16,28\}
  1. Recall Triangle Inequality Theorem: Recall the Triangle Inequality Theorem which states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
  2. Apply Theorem to Set {8,18,24}\{8,18,24\}: Apply the Triangle Inequality Theorem to the first set {8,18,24}\{8,18,24\}. Check if 8 + 18 > 24, 8 + 24 > 18, and 18 + 24 > 8. Calculation: 8+18=268 + 18 = 26, 8+24=328 + 24 = 32, 18+24=4218 + 24 = 42. Since 26 > 24, 32 > 18, and {8,18,24}\{8,18,24\}00, all conditions are satisfied.
  3. Apply Theorem to Set {14,29,45}\{14,29,45\}: Apply the Triangle Inequality Theorem to the second set {14,29,45}\{14,29,45\}.\newlineCheck if 14 + 29 > 45, 14 + 45 > 29, and 29 + 45 > 14.\newlineCalculation: 14+29=4314 + 29 = 43, 14+45=5914 + 45 = 59, 29+45=7429 + 45 = 74.\newlineSince 4343 is not greater than 4545, this set does not satisfy the Triangle Inequality Theorem.
  4. Apply Theorem to Set {8,23,31}\{8,23,31\}: Apply the Triangle Inequality Theorem to the third set {8,23,31}\{8,23,31\}. Check if 8 + 23 > 31, 8 + 31 > 23, and 23 + 31 > 8. Calculation: 8+23=318 + 23 = 31, 8+31=398 + 31 = 39, 23+31=5423 + 31 = 54. Since 3131 is not greater than 3131, this set does not satisfy the Triangle Inequality Theorem.
  5. Apply Theorem to Set {10,16,28}\{10,16,28\}: Apply the Triangle Inequality Theorem to the fourth set {10,16,28}\{10,16,28\}.\newlineCheck if 10 + 16 > 28, 10 + 28 > 16, and 16 + 28 > 10.\newlineCalculation: 10+16=2610 + 16 = 26, 10+28=3810 + 28 = 38, 16+28=4416 + 28 = 44.\newlineSince 2626 is not greater than 2828, this set does not satisfy the Triangle Inequality Theorem.

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