Add Em Up Angles in Polygons Activity

Test your geometry students’ knowledge of finding angles in polygons with this fun add em up activity.

I originally created this activity to be featured in the Winter 2023 issue of the Oklahoma Council of Teachers of Mathematics newsletter. But I decided I wanted to share it with you as well!

What is an Add Em Up Activity?

In an Add Em Up Activity, students are provided with four problems to solve. These four problems are laid out in a 2 x 2 grid with a circle at the center.

Students must work all four problems and find the sum of their four answers. We call this the “Add Em Up” step.

There are two different approaches for this activity. You can provide students with the template that tells them the sum that their answers should add up to. This makes the activity self-checking.

Or, you can give students the template with a blank circle in the center. Students must then find the sum of their four answers, write it in the circle, and bring the activity to you to verify the correctness of their sum.

Angles in Polygons Activity

For this angles in polygons activity, students are given four problems involving interior angles of both regular and non-regular polygons. If students solve the four problems correctly, the sum of their four answers should be 5430.

This activity is meant to only take 5-10 minutes of class. It would make a great exit ticket activity or a “let’s see what you remember from yesterday” opening activity.

You could also assign it as a short homework assignment.

More Add Em Up Activities

I have created Add Em Up activities for other math topics as well that you might be interested in checking out like my two step equations activity, my non-standard operations activity, or my binomial expansion activity.