Triangle Folds

by Serhiy Grabarchuk

For this puzzle you will have to produce three rectangles as shown in the illustration. For this you can use our special PDF Print 'n' Play Version.

The object of the puzzle is to make of these rectangles an equilateral triangle colored fully in red on one side and fully in yellow - on the other. 

One additional rule is that you're allowed to make just one simple fold for each rectangle.