If ABCD is dilated by a factor of 3 the coordinates of A would be

Which basic geometric term has no width, no length, and no thickness? line b. point c. angle d. plane

Can someone tell me if these are correct?

Shown here are the three essential steps in a proof of the pythagorean theorem. comparing the 1st and 3rd steps how are the colored regions related as to the areas? a. yellow+blue=orange b. orange=yellow=green c.yellow+blue=green=orange d.yellow+green=orange+blue