How to Make a Triangle
How to make your square sheet of paper a triangle.
Fold it in half. Open it up. Fold edges into the middle.
Open it up. Fold the bottom left and top right corners to the 1st and 4th lines. Repeat. Fold into the middle.
Take the none folded side and bring to the edge. Then put the triangles under the folded part.
Flip to the other side. Take corners and fold to the corners to make a square. Fold in half.