# CCSS Math Standard: 3.G.1

Reason with shapes and their attributes. Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.

## What’s In My Brain: Pentagon vs Pentagon

Students will be working with examples and non-examples to deduce the topic of regular polygons.

What odd and interesting shapes can your students find in this geometric image?

## Geometry Image: University Ave

What odd and interesting shapes can your students find in this geometric image?

## Geometry Image: Victoria Conference Center

What odd and interesting shapes can your students find in this geometric image?

## Geometry Image: Skytree

What odd and interesting shapes can your students find in this geometric image?

## Geometry Image: Steigerwald

What odd and interesting shapes can your students find in this geometric image?

## What’s In My Brain: Trapezoids or Not?

What's the deal with these four sided polygons?

## Grouping Quadrilaterals In A Hierarchy

Can we classify quadrilaterals like we classify living things?