HOW TO FIND THE PERIMETER OF A RIGHT TRIANGLE? Share with your friends Share 0 Brandon Cerejo answered this To find the perimeter of a right triangle you would have to add all the sides of the right triangle. Hope you get it!!!! 0 View Full Answer Pratham Shirbhate answered this Perimeter of right triangle=sum of all sides. 0 Shweta Sethuraman answered this perimeter of a right angle sum of every sides 2 Bharat Raghav answered this Sum of all sides Like right angled triangle ABC SO THE SUM OF ALL SIDES LIKE THIS AB+BC+AC 0