Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
orthocenter triangle whose vertices are (0, 0), (0, 12), (9, 6)
orthocenter triangle whose vertices are (0, 0), (0, 12), (9, 6)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random