Geometry Perimeter of a triangle Perimeter of a triangle: Practice finding perimeter of a triangle. Level game: 3rd and 4th grade Math games recommended for You: Angles in a triangle Perimeter of a triangle Perimeter of a square Perimeter of a rectangle Perimeter of a quadrilateral Area of a triangle 3rd grade4th grade Share this Practice math games: Rounding to the nearest thousand Long division Choose the biggest number (to 50) Leave A Comment Cancel reply Save my name, email, and website in this browser for the next time I comment.