CH4, commonly known as methane, is a tetrahedral structure with four hydrogen atoms forming around a central carbon atom. Pictorially, this structure resembles a pyramid in shape, with all four corners equidistant from the center.
Within the structure of methane, hydrogen atoms form a 109.5 degree angle with the carbon atom. Methane is an alkane and is an abundantly occurring natural gas. Its primary usage is as a fuel and is both odorless and colorless. Methane is a greenhouse gas as it is very effective at retaining heat within the Earth's atmosphere.