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Earn +20 ptsQ: Is 15 a triangle number
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What is the fifth triangle number?
The fifth triangle number, known as T5 is 15.
What number is a square and triangle number?
36 is both a square number and a triangle number as it is:6x6=36andthe square numbers are:1, 3, 6, 10, 15, 21, 28, 36, 45,55, 66, 78.xx
If A triangle has side lengths of 6 and 9 what could the third side be?
Any number between 3 and 15
Triangle with sides 7 12 15?
that's not a triangle
Triangle number of 28?
28 is a triangle number. The 28th triangle number is 406.
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