Question

What is the defination of triangular number detail​

Answer 1

Answer:

A triangle is a shape, or a specific part of two dimensional space. It has three straight sides and three vertices. The three angles of a triangle always add up to 180° (180 degrees). It is the polygon with the least possible number of sides.

Answer 2

Answer:

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Numbers whose dot patterns can be arranged as triangles are called Triangular Numbers.