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Number Puzzle #31- I See Isosceles -

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Puzzle Image Liam has a rope that is 20 inches long and wants to cut it into three pieces to form the three sides of an isosceles triangle. The length of each piece is a whole number. How many different triangles can he make?

Reminder: isosceles triangles have at least 2 sides that are the same length.

Do you have a suggestion for this puzzle (e.g. something that should be mentioned/clarified in the question or solution, bug, typo, etc.)?
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