Write a note on triangular and square numbers.
Note on triangular and square numbers :
The representation of numbers in the form of an equilateral triangle arranged in a sequence is known as the triangular number sequence.
For example:
If each number in a series can be represent by a dot in such a way that they make a square. Such numbers are known as square numbers.
Square numbers can be obtained by squaring a number.
First term ,
Second term,
Third term,
Fourth term ,
Thus, in the pattern of triangular numbers, the next number is obtained in the sequence by adding the previous row , and square numbers can be obtained by squaring.