The nth triangular number is n(n+1)/2
what is the number faces does a triangular pyramid have
6 is a triangular number, but 9 is not.
Yes It Is
6
32 is not a triangular number. The first few triangular numbers are 1, 3, 6, 10, 15, 21, 28, 36, 45, ...
6
6 vertices
no No it is not. The first 5 triangular numbers are: 1, 3, 6, 10, 15
yes it is!EDIT: No, it is not.
The numbers 1, 3, 6, 10, 15, 21, 28, . . . are know as triangular numbers. Find the greatest triangular number less than 5000.
The numbers 1, 3, 6, 10, 15, 21, 28, . . . are know as triangular numbers. Find the greatest triangular number less than 5000.
A triangular based pyramid is a tetrahedron which has 4 faces, 6 edges and 4 vertices