Making a triangular prism from paper is a quick and simple math class project, and the shapes add a pop of color when made from scrapbooking paper and set on an office shelf. You can use templates found online, but making your own means you can control the size of the finished project, and you'll have the satisfaction of knowing that all of the work was your own, start to finish.
Things You'll Need
Craft glue or double-sided tape
Draw three rectangles, all the same size and stacked on one another to make a row of joined shapes.
Make 1/4-inch rectangles on the sides and end of one of the outside rectangles. Draw a diagonal line from the corners to the base rectangles. These will be the trapezoid-shaped flaps you use to glue the prism together.
Make two equilateral triangles, using the middle rectangle as the base. Add trapezoid-shaped flaps to both of the other triangle sides. These will be the ends of the prism.
Cut out the template. Using your pencil and ruler, score the internal lines by tracing them while pressing hard on the pencil. This will make it easier to keep them straight when folded.
Fold on all of the remaining lines. Add glue or double-sided tape to the tabs and tuck them inside the folded prism. Allow the glue to dry thoroughly. You may need to press the tab areas lightly and hold them in place until the glue dries.