This video lesson teaches students how to..... *Identify the following polygons: triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon, dodecagon * Tell if a polygon is regular or not * Classify triangles as scalene, isosceles, equilateral * Find the measure of the third angle of a triangle * Find the measure of an interior angle in a regular polygon You receive not only the instructional video but accompanying notes for students to complete as they wat