This worksheet contains all of the formulas associated with 45-45-90 (isosceles) right triangles. It includes an answer key along with a detailed solution guide. The detailed solution guide is intended to provide information on areas that students usually experience difficulty with this topic as well as full worked out solutions so that you can clearly see how each answer was determined. The worksheet also includes an extension that has students creating, solving and explaining their own examples. This will allow you to assess their understanding of the material and provide work to decorate your walls as well.