Product Description: This instant feedback, sum by tab activity covers corresponding, alternate exterior, alternate interior, same-side exterior, same-side interior, vertical angles, and linear pairs. There are 20 problems - all clean, multi-step equations. Students will need to set two expressions equal to each other or sum two expressions and set equal to 180 degrees. The last 6 problems are a little more challenging because students have to choose which information is relevant to solve for th