This is an introduction to the Pythagorean Theorem and using the theorem to find the missing side of a right triangle.
This lesson includes an opening activity, minilesson with guided steps through the process, examples, class activities and a worksheet for homework. Answer keys included.
Common Core Standards included on the cover page for Grade 8 and High School Geometry.
NOTE: For Pythagorean Theorem applications, real-world problems and right triangles in the coordinate plane, see my lesson plans: The Pythagorean Theorem, Pt. II; and Solving Real-World Problems Using the Pythagorean Theorem.
Both Word and pdf versions included in the zip folder.