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.
三角形 A=(0,0), B=(6,0), C=(0,9) 的重心。(答: (2, 3) 。)
三角形 A=(0,0), B=(6,0), C=(0,9) 的重心。(答: (2, 3) 。)
Natural Language
Math Input
Extended Keyboard