This is a 29 page Smartboard lesson where students learn about the sides and angle and use them in inequalities. The lesson explains how the smaller angle corresponds with the longer side and then has them put the sides and angles in order from smallest to largest. Next the lesson explains how in order for the sides to form a triangle that the sum of any 2 sides has to be larger than the 3rd side. They practice those next. Lastly the lesson covers how to find the range of the third side if you know the length of the other two sides of the triangle. Students then practice those.