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.
area of triangle (1, 2, 3), (4, 1, 5), (2, 5, 3)
area of triangle (1, 2, 3), (4, 1, 5), (2, 5, 3)
Natural Language
Math Input
Extended Keyboard
