This worksheet is intended to replace a lecture on types of triangles (scalene, isosceles, equilateral, obtuse, right, acute) and the exterior angle theorem.
I start out class with a 15-minute "mini-lesson" that goes over the basic ideas, and then I set them out to work on this worksheet together.
I use this activity within cooperative groups, and I circulate to make sure they are getting the purpose of the questions.
The file includes spiral review problems.
This worksheet is intended to be written on directly.
Please download the pdf preview file first, so you can see exactly what's included; the product file is a word document, which you may personalize for your students.