Perimeter of a triangle 

It's easy to find the perimeter of a triangle!  Remember, a triangle is a  polygon with 3 sides.

All you need to do is add up the lengths or amounts of each side to find the total sum.

                                                                                                                   5 inches

back to home page                              3 inches

                                                                                                            7 inches

5+3+7=15 inches     So the perimeter is 15 inches.