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Circle Theorems Task Cards

Grade Levels
9th - 11th, Homeschool
Resource Type
Formats Included
  • PDF
20 task cards + answer key

Also included in

  1. All of my geometry activities and geometry games in one bundle! By purchasing this bundle, you pay 20% less than you would if you purchased each product individually!Please click on the individual products for a detailed description! The activities include: geometry task cardsgeometry card sortsgeo
    Save $14.01
  2. This is a complete circles unit for Geometry. This is the 7th unit in my Geometry Curriculum.*Update: Video lessons are now included for each set of notes!*Topics include:All circles are similarCircle anglesCircle segments and linesArc LengthSector AreaIncluded Products: Circles Guided Notes & W


This circle theorem activity covers:

  • arc length
  • measures of angles/arcs involving central, inscribed, vertex inside, and vertex outside angles
  • tangent segments and a radius (Pythagorean Theorem)
  • segment lengths (two chords, two secants, secant & tangent)

All equations are linear or quadratic where you can solve by taking the square root.

Includes 20 full page task cards (I print them on brightly colored paper), a student answer sheet, and the answer key.

*Grab the digital version of this activity here!

If you want some ideas on using task cards in the classroom, check out my blog post!

Terms of Use:

This product should only be used by the teacher who purchased it. This product is not to be shared with other teachers. Please buy the correct number of licenses if this is to be used by more than one teacher.

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Total Pages
20 task cards + answer key
Answer Key
Teaching Duration
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to see state-specific standards (only available in the US).
Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.
Construct the inscribed and circumscribed circles of a triangle, and prove properties of angles for a quadrilateral inscribed in a circle.
Identify and describe relationships among inscribed angles, radii, and chords.


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