Introduction

The parallelogram rule for addition

The triangle rule for addition

Adding a vector to its negative

Subtraction of vectors

Adding the zero vector

The head-minus-tail rule

After reading this section, you will:

• Appreciate that the parallelogram and triangle laws give the same result
• Be able to draw diagrams illustrating addition and subtraction of vectors
• Be able to use the "head minus tail" rule to subtract position vectors