Valid triangle side lengths
CMAT 2020 · Quantitative Techniques & Data Interpretation · Easy · Geometry
Which of the following sets of numbers can be used as the lengths of the sides of a triangle ?
- A.
[5, 7, 12]
- B.
[5, 7, 9]
- C.
[7, 9, 17]
- D.
[2, 4, 10]
Answer
B
Explanation
By triangle inequality, the sum of any two sides must be strictly greater than the third side.
- :
- : , , (Valid)
- :
- :
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