CCSS 5.G.3 (Common Core, 5th Grade): "Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.
Geometry Classify two-dimensional figures into categories based on their properties.3Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category.