Question 144617
right triangle--> if one angle measures 90 degrees or pi/2 radians. Moreover, the sides would follow the Pythagorean Formula: a^2+b^2=c^2, where a and b are sides opposite angles less than 90 degrees and c is the hypotenuse, the side opposite the right angle.

scalene triangle--> if all the sides are of different length and angles are of different measure. 

equilateral triangle--> if all the sides are of the same length and all angles are of the same measure.


You would determine the length of sides using the distance formula {{{d=sqrt((x2-x1)^2+(y2-y1)^2))}}}