120 likes | 271 Views
Uncover the world of triangular numbers with this guide, including how to calculate, examples, and a helpful table from 1-20. Learn the rule to solving triangular numbers and test your knowledge with practice exercises.
E N D
Triangular Numbers • by Ryan and Michael
Introduction • Triangular numbers are numbers that are used to form a triangle. Triangular numbers are 1,3,6,10 and so on.
The Rule To Solving Triangular Numbers • For example if you wanted to find the 57th triangular number, you need to add all the numbers from 1 to 57. • So you add 1+2+3+4+5+6+7+8 and so on.
Some Examples • Finding the triangular number of 17 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17=153 • Finding the triangular number of 14 • 1+2+3+4+5+6+7+8+9+10+11+12+13+14=105
Table This is the table of the triangular numbers from 1-20
Now for you to do the work • What is the triangular number of 21 =
The Answer • If you got this answer you know how to find triangular numbers. • THE ANSWER IS...... not telling you
the answer is • The answer is... 230
Thanks For Watching • Thanks for watching!