SQUARE NUMBER - The number you get when you multiply an integer by
itself.
Example: 4 × 4 = 16, so 16 is a square number.
Here are
the first few square numbers:
0 (=0×0)
1 (=1×1)
4 (=2×2)
9 (=3×3)
16 (=4×4)
25 (=5×5)
...
itself.
Example: 4 × 4 = 16, so 16 is a square number.
Here are
the first few square numbers:
0 (=0×0)
1 (=1×1)
4 (=2×2)
9 (=3×3)
16 (=4×4)
25 (=5×5)
...
TRIANGULAR NUMBER - A number that can make a triangular dot pattern.
Example: 1, 3, 6, 10 and 15 are triangular numbers
Example: 1, 3, 6, 10 and 15 are triangular numbers