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.
Birth Control Shot. The birth control shot, known as Depo Provera, is a hormonal injection that protects against pregnancy for three months. For the typical couple, it is more effective than the birth control pill -- only 3% of users get pregnant in a year. Pros: Only injected four times per year, highly effective. Cons: Cost (about $240 per year), may cause spotting and other side effects.