[b]Goal here: [/b][br]Estimate the location of the triangle's centroid by dragging the [b][color=#38761d]LARGE POINT[/color][/b] to where you think it lies. [br][br]You can use the small point to help you out. If you wish to sketch anything in the picture below, you can [br][list][*]Turn on the trace of the [b][color=#38761d]small point[/color][/b] by selecting the [b][color=#38761d]Show Trace[/color][/b] button on the right side. [/*][*]Turn off the trace of the [b][color=#38761d]small point[/color][/b] by selecting the [b][color=#38761d]Hide Trace[/color][/b] button on the right side. [/*][*]Erase all traces by selecting the [b][color=#38761d]Erase Traces[/color][/b] button in the lower left corner. [/*][/list]