A “real” image occurs when light rays actually intersect at the image, and become inverted, or turned upside down. ... In flat, or plane mirrors, the image is a virtual image, and is the same distance behind the mirror as the object is in front of the mirror. The image is also the same size as the object.
All compounds are molecules but not all molecules are compounds. A molecule is two atoms joined together. A compound is two different atoms joined together.
Most often those smaller structures are triangular in shape because triangular shapes are very strong and stable
I believe the answer is #4. u can always ask google if u believe that's the wrong answer :)
