Matching Pairs Review of PolygonsOnline version Review number of sides in polygons by Sarah MCMILLON 1 Octagon 2 Hexagon 3 Heptagon 4 Triangle 5 Decagon 6 Quadrilateral 7 Pentagon 8 Nonagon 4 Sides 10 Sides 8 Sides 3 Sides 7 Sides 9 Sides 5 Sides 6 Sides