No - but it is a square number.
1,3,6,10,15,21 & 28 are all triangular numbers.
1,4,9,16,25 & 36 are all square numbers.
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Decimal triangular number it is
36 is a triangular number, Square number and also a Consecutive number.
They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.They don't necesarily,3 is a triangular number and 10 is a triangular number. Their sum is 13 which is not a square number.
Yes, 1 is a triangular number.
no- 29 is not triangular. The triangular numbers closest to 29 are 28 and 36.