The main difference is that corn starch is a very pure starch, while wheat flour has a high protein content. There are some differences in texture and flavor, but these mostly result from how you work with them.
The term isometric comes from the Greek for equal measure, reflecting that the scale along each axis of the projection is the same (unlike some other forms of graphical projection).
A circle is said to be symmetric under rotation or to have rotational symmetry. If the isometry is the reflection of a plane figure, the figure is said to have reflectional symmetry or line symmetry; moreover, it is possible for a figure/object to have more than one line of symmetry.