This is a document that contains 72 diagrams of triangles, of various shape, with the vertices in various colors.
These diagrams can be printed and then used by the students to show that the three angles of a triangle make up 180°, by cutting the colored vertices and placing them alongside each other.
I would suggest gluing the diagrams to some cardboard before cutting, but cutting directly from the paper is also fine.
There are 2 triangles on each page, making a total of 36 pages.
72 graphs may seem like overkill, but I made 72 so that kids could have a choice of colors to choose from
These take hours to make and hopefully can give your kids a fun activity to do and save you hours of work in the process.
Picture one gives you an idea of the general layout of the document. Pictures 2, 3 and 4 give sample triangles from the document.