1.1 Sorting and Sketching Polygons

This is the first day of our new unit that focuses on describing, drawing, measuring, and building a variety of polygons.  This is important as polygons are used in a whole bunch of different ways and in different places.  From architecture, to patterns on fabric, to designing furniture and computer graphics.

Focus Question:

What properties do all polygons share?  What properties make some sub-groups of polygons different from others?

Do Now Task:

• Place your copy of the "Shapes and Design Unit Readiness" in the middle of the table group.  Make sure that your name is on it.
• As a group, look at the examples shown of Polygons and Non-Polygons.  Describe the differences between polygons and non-polygons.

Lesson:
In this first problem, you are going to look for similarities in a variety of different shapes.  These shapes are found on page 9 of your textbook.

With your group, answer questions A, B, C, D.  You should write your responses in your squarebook.

By the end of this problem you should be able to do the following:

• Describe properties that a set of polygons have in common (notice that we are not focusing on the name of a group e.g. triangles, but the properties the group has in common e.g. three sides and three angles)
• Decide whether a shape belongs in a group with a given set of properties.
• Draw a shape that belongs to a group with a given set of properties.

What you MUST do before next class:

1. ACE Problems (3) (38, 40, 42, 44, 46) (64, 65+)