Triangular number: An integer of the form (1/2)n(n + 1), where n is a positive integer.12 is not a triangular number. The first few triangular numbers are 1, 3, 6, 10, and 15.
Triangular prism
The boat had triangular sails.
The boat was small and had two triangular sails.
Triangular prism * * * * * No. It is a triangular pyramid or a tetrahedron. A triangular prism has 6 vertices and 5 faces.
The number of edges of the triangular pyramid is eight but the number of faces is five.* * * * *Even though put in italics, the answer is wrong. It would have been correct for a square or rectangle based pyramid but NOT a triangular pyramid. The latter has 6 edges (and 4 triangular faces).
Is 63 a triangular number I think it is a triangular number.
013
no it is not a triangular number
Decimal triangular number it is
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.
36 is a triangular number, Square number and also a Consecutive number.
Add the previous triangular number. For example 6 + 3 or 10 + 6 or 15 + 10. Using some algebera: n(n+1)/2 + (n-1)n/2 = n-squared
No, 33 is not a triangular number.
No, 172 is not a triangular number.
No, 324 is not a triangular number!
No, 18 is not a triangular number.