4.*Why did the geometry teacher call in sick?* Because she sprained her angle!🤣🤣 Geometry is a branch of mathematics that deals with the study of shapes, sizes, and positions of objects. It involves the use of points, lines, angles, and planes to describe and analyze geometric figures. Key Concepts in Geometry: 1. *Points*: A location in space, represented by a set of coordinates. 2. *Lines*: A set of points that extend infinitely in two directions. 3. *Angles*: Formed by two lines or planes intersecting. 4. *Planes*: A flat surface that extends infinitely in all directions. 5. *Solids*: Three-dimensional objects, such as cubes, spheres, and pyramids. Geometry is an essential part of mathematics, and its applications are vast and diverse.