My Geometry students loved this! This Classifying Triangles card sort worksheet activity was the perfect activity for my Middle School Math & High School Geometry students to practice sorting triangles by their angle and side measurements.

Appletastic: Blossoming in Fifth Grade: Triangle Classification Made Easy!

Talking Triangles has 5 guided practice worksheets that review the classification of triangles by their angle and side measurements. The 5 worksheets are leveled and progressively get more difficult. The review portion of Talking Triangles includes six 2-sided worksheets that review calculating the third angle of a triangle, and classification of a triangle according to the measurements of angles and sides.

These 11 geometry memory games cover several Common Core standards (see above)…

Appletastic: Blossoming in Fifth Grade: Triangle Classification Made Easy!

Triangle Classification with a few theorems thrown in -- Fun Geometry game with just a bit of strategy required to keep it interesting