Rotation. In this animated Math Shorts video from the Utah Education Network, learn about rotation, which describes how a geometric shape turns around a point, called the center of rotation. When a geometric shape rotates on a coordinate plane, it stays exactly the same distance from the center of rotation.
Which birth control methods also protect against sexually transmitted infections (STIs)? The male latex or polyurethane condom gives the best protection against STIs. The female condom provides some protection. With all other methods, you also should use a male or female condom to protect against STIs.
1 A backup plan that helps prevent pregnancy from happening after unprotected sex or birth control failure and is not for routine use.  For use within 72 hours (3 days) after sex, but the sooner you take it, the better it works.