1 = 1
3 = 1 + 2
6 = 1 + 2 + 3
10 = 1 + 2 + 3 + 4
15 = 1 + 2 + 3 + 4 + 5
this is how we work out triangular numbers. It is the number of dots that when drawn form a triangle
The formula for the nth triangular number is n(n+1)/2
This question needs to be stated more clearly. For example, what does it mean to put 9 numbers on the 3 sides of a triangle?
Triangluar numbers or triangle numbers are numbers formed from the summation of all the numbers smaller than them. The first few triangle numbers are 1,3,6,10,15,21... If you think of a pyramid with a base of two blocks, and one on top, there are three blocks. If you add a base of three to that pyramid, you have six blocks. Then ten, and fifteen and so on. That is why they are called Triangle numbers.
If you mean units of 6 8 and 10 then yes they can form the sides of a right angle triangle.
how are the odd numbers arranged Pascal's Triangle?
A triangle has 3 sides. You have provided 4 measurements. There is therefore some confusion here as to what these numbers mean.
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
A triangle has only 1 face.
The answer depends on what you mean by "mean of triangle". There is no such geometric term.
No. Triangle numbers are a fixed set of numbers that can't be altered to make one certain number turn into a triangle number.
If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.If you mean "triangle", a triangle can never have two parallel sides.
There are always 3 edges on a triangle, otherwise it would not be a triangle.