Unit 7: Lesson 1 Classifying Polygons Vocab

Front

polygon

Back

A closed plane figure with at least 3 straight sides.

Front

plane figure

Back

two-dimensional

Front

triangle

Back

3 sides

3 angles

3 vertices

Front

quadrilateral

Back

4 sides

4 angles

4 vertices

Front

heptagon

Back

7 sides

7 angles

7 vertices

Front

octagon

Back

8 sides

8 angles

8 vertices

Front

nonagon

Back

9 sides

9 angles

9 vertices

Front

decagon

Back

10 sides

10 angles

10 vertices