- A4, 5, 10
- B4, 5, 8
- C6, 6, 6
- D7, 8, 9
Step-by-Step Solution
Check 4+5=9, which is less than 10. The triangle inequality fails, so 4, 5, 10 cannot form a triangle. The others all satisfy it.
Answer: A) 4, 5, 10
Which set of lengths CANNOT form a triangle?
Class 9Inequalities in a TriangleGeometry — Triangles
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