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. Students had to figure out if the triangles with Equilateral, Isosceles, or Scalene. Then they had to figure out if they were Equiangular, Right, Acute, or Obtuse Triangles. I will definitely be doing this in our math interactive notebooks again!
Triangle Measurement Interactive Notebook Page - showing proof that the interior angles of a triangle have a sum of 180 degrees. So much better than just telling students. Show the proof.
These two worksheets challenge your students to consider the inside angles of triangles, and write numbers to order the angles. This can introduce your student to angles, measuring angles with a protractor, and the classifications of triangles.