Prove that the points (2, 1) (3, 0) and (9,0) are the vertices of right-angled isosceles triangle​

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.

Answerseafloor spreading;