Presentation
Videos
https://www.youtube.com/watch?v=zV7aDRMEt9U
https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-working-with-triangles/v/another-isosceles-example-problem
https://www.youtube.com/watch?v=ARD6wKlM54g
Practice Activities & Worksheets
https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-working-with-triangles/e/find-angles-in-isosceles-triangles
http://mrspoonsmath.weebly.com/uploads/2/3/1/9/23192890/station_2_-_isosceles_triangle.pdf
