Try my new Self-Checking DIGITAL ACTIVITY version of Quadrilateral "Always" Relationships (with hints!) on Google Sheets™ to distinguish between the subcategories of quadrilaterals. OR This FREE PDF worksheet helps students identify which attributes always qualify one quadrilateral to be classified as another, or identify which attributes are missing that disqualify one quadrilateral to be classified as another. Addresses: Quadrilateral, trapezoid, parallelogram, rectangle, rhombus, square Per