Diagonals of Quadrilaterals Activity – High School Geometry Activity

In this high school geometry activity, students work with the diagonals of quadrilaterals: parallelograms, rectangles, rhombi, and squares. They classify quadrilaterals, solve for missing values, and prove key geometric theorems.

What’s included

• Cut and paste version, where students solve the problems and match their answers by cutting and pasting
• Standard practice version, set up as a traditional worksheet
• Detailed instructions
• Answer key

Skills covered

The problems cover diagonal relationships, angle measures, and lengths in all four shapes.

How to use it

Assign it as classwork or homework, or pull it out for a review session. Having two formats gives you some flexibility. The cut and paste version is the hands-on option. The standard version suits students who prefer a more direct worksheet.

Quick facts

• Topic: diagonals of parallelograms, rectangles, rhombi and squares
• Grades: 8–10
• CCSS: HSG-CO.C.11
• Answer key: included

Bundles and related resources

You can also find this activity in my Quadrilaterals and Polygons Geometry Curriculum Unit.

Free resources

Get my free Warm Up Slides templates.

Terms of use

By purchasing this product, you own a license for one teacher only for personal use in their own classroom. Licenses are non-transferable and therefore can not be passed from one teacher to another. If the teacher who purchased this license leaves the classroom or changes schools, the license and materials leave with that teacher. No part of this resource is to be shared with colleagues or used by an entire team, grade level, school or district without purchasing the correct number of licenses. If you are a coach, principal or district interested in transferable licenses that would accommodate yearly staff changes, please contact me for a transferable license quote at lindsay@beyondtheworksheet.com.

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