Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Pretend you're me and you're in math class. Actually, never mind. I'm sick, so I'm staying home today.

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Somer G. Anderson is CPA, doctor of ...

Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician (CMT). Alistair Berg / Getty Images A triangle chart pattern is used in technical ...