Final answer:
Radiation therapy is a method of treatment for cancer that uses high-energy waves to attempt to destroy cancer cells in a specific area.
Step-by-step explanation:
Radiation therapy is a method of treatment for cancer that uses high-energy waves, such as X-rays, to attempt to destroy cancer cells in a specific area. It is one of the many techniques used to treat cancer and is often used in addition to surgery and/or chemotherapy. Radiation therapy works by directing multiple rays toward the cancer from different angles, sparing normal tissues as much as possible.