There are many variations on the basic right angle sex position. This image highlights how our model A (doing the penetrating) can use B's legs to grab on to, and can create more motion by moving B's leg(s). B can also change the way this position feels by either extending their leg or bending it at the knee. This is also an easy way for B to have some control over the depth of penetration.
One of the great things about the right angle sex position is the variation it allows both partners in the use of their legs and arms, the angle of penetration, and the amount of physical contact.
