Toilet Paper Origami: Triangle Fold

With the toilet paper still attached to the roll, pull out about 2 or 3 squares worth of TP and stretch it above the roll. Fold the top right corner down towards the left to form a right-angled triangle. Join point A to point B by folding the top left corner down to form an isosceles triangle. Gently layer the TP back onto the roll. Adjust the roll so that the triangle hangs nicely. Done!