Chapter 7 - Applications of Trigonometry and Vectors - Section 7.4 Vectors, Operations, and the Dot Product - 7.4 Exercises - Page 332: 12

We can sketch the vector $d$ and the vector $-e$ so that their initial points coincide. Then we can use another copy of the vector $d$ and the vector $-e$ to complete the parallelogram. The resultant vector through the middle of the parallelogram is the vector $d-e$.

To sketch the vector $d-e$, we can sketch the vector $d$ and the vector $-e$ (which points in the opposite direction from the vector $e$) so that their initial points coincide. Then we can use another copy of the vector $d$ and the vector $-e$ to complete the parallelogram. The resultant vector through the middle of the parallelogram is the vector $d-e$.