SOLUTION: Can a triangle with sides 6cm, 3cm, and 9cm exist? Explain.

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Question 810129: Can a triangle with sides 6cm, 3cm, and 9cm exist? Explain.

Answer by htmentor(1343) About Me  (Show Source):
You can put this solution on YOUR website!
No. In a triangle, the longest side must be less than the sum of the other two.
In order for the 3rd side to equal 9, the opposite angle would need to be 180 deg,
which means the triangle would be flattened to the point of becoming a straight line.