Explanation:
No the triangle cannot be formed with the sides lengths of 7cm, 2 CM and 9 CM because the sum of two side should be greater than the third Side.
Answer:
no
In order to have a triangle the sums of 2 of the sides have to be greater than the other side. Since 7 + 2 = 9 and 9 = 9, the triangle won't work.
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