This is a smart board lesson on a beginning lesson to geometry where students are learning how to classify acute and obtuse angles. In this lesson there are also slides where students are asked to come and identify parallel, perpendicular, and intersecting lines and properly label them. Examples are given on each slide, minus the slide using the vortex. At the very end, students are exposed to a protractor and how to read it. The slides are in the order they are in because it is an introductory lesson to our geometry unit and it's more review from what they learned last year. On the trapezoid slide, there is a block hiding the answers. This is my first time posting something on here so feedback would be much appreciated for bettering my future products!