Sides $1, 2, 3$ — can they form a triangle?

Sides $1, 2, 3$ — can they form a triangle?
  1. No, $1 + 2 = 3$ (degenerate)
  2. Yes
  3. Only if obtuse
  4. Only if right

Solution

$1 + 2 = 3$ is not strictly greater than $3$, so no proper triangle.

Asked in: MH-SSC-9

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