Size Constancy: Size constancy refers to our ability to perceive the true size of an object regardless of its distance from us. For example, we know that a car doesn't actually shrink as it moves away from us.
Shape Constancy: Shape constancy is our ability to recognize an object's shape regardless of its orientation. We can still identify a door as rectangular even if we see it at an angle.
Color Constancy:Color constancy is the tendency for perceived colors to remain relatively stable despite changes in lighting conditions. For instance, we still see a tomato as red whether it's under natural sunlight or artificial indoor lighting.