Refer to the link for a image.
An erect but virtual image of same size but with lateral inversion
It is called "Lateral Inversion". Lateral means "sideways". The term is used because the image often seems left-right reversed. In fact the inversion is really at right angles to the mirror surface, but it can appear to be laterally reversed.
This refers to the apparent left-right reversal often shown by the image in a plane (flat) mirror. Lateral means "sideways". In fact it's something of an illusion, because the inversion is really in the direction perpendicular to the mirror surface.
In plane mirror and in ambulances.
A plane mirror.
erect image is the copy of the object same as it appears.......for example stand in front of the plane mirror image seen is erect.
The image formed by a plane mirror is virtual image.
Plane mirrors produce a virtual image.
whet is real and complex plane
Actually a plane mirror inverts an image not side to side, but front to back. If you hold up your right hand in front of a mirror, the images of the parts of your hand closest to you will be the farthest away. It is this inversion that turns a left hand into a right hand, while leaving the thumbs on both hands pointing in the same direction.
In 'a' plane mirror only 'one' image is formed.
All complex numbers are part of the "complex plane", so none of them is farther than others.