In ptolemy's geocentric model, the normal eastward motion of the planets was along?

No, In ptolemy's system the model the normal easter admonition of the planets is in elliptical motion.

Explanation:

As in the Ptolemy system, each planet moves in the system of two spheres. One called deferent and the other is epicycle. Both of these models were used by Greek astronomers, with the idea of eccentric. The noticeable extent of eccentricity is less than 5%, but offset the distance of the center focus being occupied by the sun. To summarise this Ptolemy devised a system that would be compatible with that of the  Aristotle system suggesting the stars to move in the westward direction, the sun and moon along with the eastward motion and planets in varying in size and speed of general eastward motion. This geocentric model was replaced by the Heliocentric model later on.

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.