28 and 10 are both triangular numbers and add up to 38
78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.
No. Triangle numbers are a fixed set of numbers that can't be altered to make one certain number turn into a triangle number.
No 859 is a number, to make a triangle you need to join up lines not numbers.
10 + 28 are two triangle numbers that, added together total 38.
3 4 5
No.
They can be: 37-2 = 35
2 and 17
Yes. I think they're in the 3rd diagonal of the triangle. Basically, its how many numbers you need to make a geometrically correct triangle: 1, 3, 6, 10......
These numbers added together make the 1000th triangle number, which is 500,500.
32,015,032. Make sure to use the Commas too (=!
Eight and four.