Similar Triangles Task Cards

Grade Levels
8th - 10th
Formats Included
  • PDF
16 task cards + answer key
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  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
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  2. This is a complete congruent and similar triangles unit for Geometry. This is the 4th unit in my Geometry curriculum.*Update: Video links are now included for each set of notes!*Topics include:congruent triangle shortcuts (SSS, SAS, ASA, AAS, HL)congruent triangle proofs (with and without CPCTC)cong


The digital version of this resource for Google Drive™ using Google Forms can be found here: Distance Learning: Similar Triangles Digital Task Cards. You are able to edit this assignment using Google Forms and assign it to your students via Google Classroom.

These similar triangles task cards require students to determine if two triangles are similar. Answers include SSS, SAS, AA, and not similar. Students must know vertical angles and alternate interior angles.


  • 16 task cards
  • Student response sheet
  • Answer key

*Grab the digital version of this activity here!

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Or get my complete Congruent and Similar Triangles Unit!

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

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Total Pages
16 task cards + answer key
Answer Key
Teaching Duration
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to see state-specific standards (only available in the US).
Use the properties of similarity transformations to establish the AA criterion for two triangles to be similar.
Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar; explain using similarity transformations the meaning of similarity for triangles as the equality of all corresponding pairs of angles and the proportionality of all corresponding pairs of sides.


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