Segments in Circles Dominos – Circle Segment Theorems – High School Geometry

Each domino in this high school geometry activity has one circle segment problem and one numerical answer. Students apply circle segment theorems to find unknown lengths, then connect each problem to the domino showing the correct answer.

When the work is correct, all the dominoes form a closed loop, so students can check themselves. The practice is structured around algebraic reasoning, theorem identification and accurate diagram interpretation.

What’s included

• Domino-style problem cards
• Printable student activity, where students cut, solve and connect the dominoes
• Complete answer key showing the correct closed-loop configuration
• Teacher notes with objectives, prerequisite skills, common errors, and differentiation and extension ideas

The problems involve:

• Intersecting chords
• Secants
• Tangents
• Mixed segment relationships

Skills covered

• Applying circle segment theorems to find unknown lengths
• Writing and solving algebraic equations from diagrams
• Identifying which circle theorem applies in a given situation
• Using the Pythagorean Theorem when required
• Interpreting intersecting chord, secant and tangent relationships

Quick facts

• Grades: 8–10
• CCSS: HSG-CO.A.1, HSG-GPE.B.6
• Answer key: included

Bundles and related resources

These dominoes can be found in my Circles and Conics High School 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.

© Beyond the Worksheet. Please note – all material included in this resource belongs to Beyond the Worksheet Inc. By purchasing, you have a license to use the material but you do not own the material. You may not upload any portion of this resource to the internet in any format, including school/personal websites or network drives unless the site is password protected and can only be accessed by students, not other teachers or anyone else on the internet.