# Dot Product Insight

- Author:
- Tim Brzezinski

Recall the

**dot product of 2 vectors <a, b> & <c, d>**is defined to be the value**(a)(c) + (b)(d)**. Note that the**dot product of 2 vectors is a scalar quantity.**In the applet below two vectors (**u**and**v**) are drawn with the same initial point. Their dot product is also shown. Interact with this applet for a few minutes. Do you notice anything (or several things) that seem interesting? Do you notice any patterns? If so, describe.