Geometryeasy · Past Paper
Which of the following sets of side lengths can form a triangle?
A2 cm, 3 cm, 5 cm
B1 cm, 2 cm, 4 cm
C3 cm, 4 cm, 5 cm
D5 cm, 5 cm, 11 cm
✓ Correct Answer: C — 3 cm, 4 cm, 5 cm
By the triangle inequality theorem, the sum of any two sides must be greater than the third side (3+4 > 5).
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