Triangles with 3 90 degree angles? 3 sided and 5 sided squares? Triangles with less/more than 180 degrees as sum total??! What is this madness. Enjoy the video...

https://t.co/wwVEaYnJl6

— Britten Mathematics (@BBMaMaths) October 26, 2018

Triangles with 3 90 degree angles? 3 sided and 5 sided squares? Triangles with less/more than 180 degrees as sum total??! What is this madness. Enjoy the video...