Here, we have a custom tool (far right) that lets you quickly construct a right triangle by simply plotting 2 points and THEN entering the measure of one of its acute interior angles. [br][br][b]Note: [/b][br]If you select the RightTriangle tool (far right), simply plot 2 points. Then, enter in the measure of any acute angle. (You can also, if you choose, enter [math]\alpha[/math] = name of slider) if you wish to quickly change the size of this acute angle.