4 7.1 pgs. 359-366 EQ: How do we classify and name polygons? Date: These are polygons: These are not polygons: * Polygon: ___________________________________________________________________________ _____________________________________________________________________________ * Convex Polygon: * Concave Polygon *Regular Polygon Example 1: Naming and Classifying Polygons Name the following polygon and identify its sides and angles. Name: _____________ Sides: ___________________________ Angles: __________________________ Classify each polygon below by stating if it is convex, concave, or regular, and using the chart to identify it by the number of sides. a. b. c. d. e. f. Sides Name 3 Triangle 4 Quadrilateral 5 Pentagon 6 Hexagon 7 Heptagon 8 Octagon 9 Nonagon 10 Decagon 12 Dodecagon n n-gon A T N C R Thy 420 A shape with straight closed sides that only intersect at vertices A 0 All angles y are and All angles point Ifanyw vertexis must be out pointing in convex ACNRT AT EN TRT FA LA LC LN LR LT Concave convex Hexagon Pentagon Convex Concave Quadrilateral Heptagon Concave Regular Dodecagon Octagon 11 gon B gon