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Grade 7 Math · Problem type
Can the sides make a triangle?
Use this for “Can sticks of 2, 3 and 6 inches make a triangle?”
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Can the three lengths make a triangle?
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Assumptions
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The two shorter sides must reach past the longest one when they meet at its ends.
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So they must add to more than the longest side.
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If they only add to the same length, the triangle lies flat: no triangle.
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Supplementary, complementary, vertical and adjacent angles
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