Triangles are one of the most basic shapes that we learn about as children. You likely know that every triangle must have three angles and three sides. But as you grow up, you most likely will realize that there is a lot more you can know about triangles. Do you remember the difference between equilateral, isosceles, and scalene triangles? Do you know what an acute angle is and what an obtuse angle is? This fun word search puzzle includes 12 words about triangles that you should know. See if you can find them all, and see if you know what all of them mean!