SOLUTION: How many different sized triangle can be formed using 7cm,8cm,12cm, and 15cm rods? Please explain me... Thanks

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Question 885795: How many different sized triangle can be formed using 7cm,8cm,12cm, and 15cm rods?
Please explain me...
Thanks
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Do you mean 1 of each length?
Or is 7, 7, 7 an option?