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.
triangle {(0,0), (15,0), (0,20)} vs triangle {(0,0), (3,0), (0,4)}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random