1. Poly- many -gon angles or sides Polygon -many angles/sides
Standard MG Lessons 12.3 (#1-17)
Objective: Identify, describe, and classify polygons
Poly- many -gon angles or sides Polygon -many angles/sides
Uni unicycle 1 wheel
Bi bicycle 2 wheels
Tri tricycle 3 wheels Triangle 3 sides
Quad- 4 quads 4 wheels Quadrilateral 4 sides
Penta (see a pattern here) Pentagon 5 sides
Hexa Hexagon 6 sides
*Sept- 7 Septuplets 7 babies Septagon 7 sides
Octo- 8 Octopus 8 tentacles Octagon 8 sides
Nono Nonagon 9 sides
*also known as Hept- or Heptagon for 7.
3rd grade isn’t required to know blue words.
Created by Therese Duffy 2011

2. Polygon -many angles/sides All of the shapes below are polygons.
Standard MG Lessons 12.3 (#1-17)
Objective: Identify, describe, and classify polygons
Polygon -many angles/sides All of the shapes below are polygons.
Triangles
Quadrilaterals
Polygons also
Created by Therese Duffy 2011

3. 1. Look at the figure, is it closed?
Standard MG Lessons 12.3 (#1-17)
Objective: Identify, describe, and classify polygons
Polygon many sides
Triangle 3 sides
Quadrilateral 4 sides
Pentagon 5 sides
Hexagon 6 sides
Octagon 8 sides
A Plane Figure is flat, you could draw it on your paper.
A Polygon is a closed plane figure, no openings and no lines crossing over each other.
Steps
1. Look at the figure, is it closed?
2. Count the sides.
3. Write the figure’s name and the number of sides.
Created by Therese Duffy 2011