HomeGeometry Geometry How To Find The Perimeter Of A Triangle? By HTuser 15 Add the lengths of all three sides Use the formula: Perimeter = side 1 + side 2 + side 3 Make sure all side lengths are in the same unit Write the total with the correct unit Share FacebookXPinterestWhatsApp Suggested for You How To Find Volume Of A Rectangular Prism? How To Find The Volume Of A Cube? How To Find The Volume? How To Find The Missing Side Of A Triangle? How To Find The Area Of A Shape? How To Find Radius And Circumference? Load more Trending Today How To Treat A Sprained Ankle? How To Increase Iron Levels? How To Cure Neck Pain Fast? How To Microwave A Baked Potato? How To Tell If You Have Kidney Stones? How To Clean A Blackstone Griddle? Load more