There are a total of 1,080 degrees in the interior of an octagon. The angles can be evenly divided into eight angles of 135 degrees, as in a regular octagon, or any random combination in an irregular octagon. Continue Reading.
Smoking tobacco is one of the biggest causes of lung cancer. More than 8 out of 10 lung cancers (80%) are caused by smoking .This includes breathing in other peopleâs cigarette smoke. Even light or occasional smoking increases the risk of lung cancer.
In this section you can learn more about the known causes of cancer, including genetic factors; lifestyle factors such as tobacco use, diet, and physical activity; certain types of infections; and environmental exposures to different types of chemicals and radiation.earn about some of the environmental causes of cancer that may lurk in our homes, at work, in pollution, and even in some medical tests and treatments. You can also learn how some types of infections are linked to cancer.