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Grade 4

CCSS Math Standard: 4.G.2

Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.

Geometry Image: Esplanade Theaters

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?

Which are trapezoids and which are not?

 The Angles of a Triangle

Why tell a kid the rules of a triangle when they can discover them!?