In this FREE self-checking activity, students will determine if the triangle is possible or not when given 3 side lengths. As questions are answered correctly, pieces of the picture will be revealed! This activity is SELF-CHECKING and gives students INSTANT feedback! If the students answers a question incorrectly, the cell will turn red so they know they need to rework the problem! If they are correct, the cell will turn green and reveal some of the picture! This FREE activity is great because:R