geometry

Solid Geometry is about three dimensional objects like cubes, prisms, cylinders and spheres.
Point, Line, Plane and Solid

A Point has no dimensions, only position
A Line is one-dimensional
A Plane is two dimensional (2D)
A Solid is three-dimensional (3D)

Plane Geometry is all about shapes on a flat surface (like on an endless piece of paper).

source:mathisfun.com

point of view:

geometry is a little bit tricky because there are lots of memorization. But the thing about geometry is that you get to know shapes and identify them. You also learn how to find the area and perimeter of shapes and objects by knowing their formulas. Once you get to understand geometry, you'll eventually enjoy it.