Great Resource!
Practice!
https://learnzillion.com/lesson_plans/5524-classify-quadrilaterals-by-looking-at-multiple-attributes/
http://www.math-play.com/classifying-triangles/classifying-triangles.html
https://www.mathgames.com/skill/5.3-types-of-triangles
http://studyjams.scholastic.com/studyjams/jams/math/geometry/classify-triangles.htm
Lots of geometry game options!