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.
Determina if (1,2), (5,2), (5,5), (1,5) formano un rettangolo
Determina if (1,2), (5,2), (5,5), (1,5) formano un rettangolo
Natural Language
Math Input
Extended Keyboard
