1. Lesson 4

1.13. Explore 9

Mathematics 30-2 Module 3

Module 3: Permutations, Combinations, and the Fundamental Counting Principle

 

To find the number of diagonals, subtract the number of sides from the total number of line segments since sides do not qualify as diagonals.

 

This can be represented using the following formula:

 

 

number of diagonals = nC2 − n

 

Self-Check 6


textbook

Complete questions 1, 6, 9, 10, 12, 15.a., and 15.c. from pages 118 and 119 of your textbook. Answer

 

 

 



glossary

Add combination to your copy of Glossary Terms.

 

 

 



formula

Add the following formula to your copy of Formula Sheet.