Topology is a branch of mathematics that studies the properties of space.

Differential geometry is a field of mathematics that studies geometric objects such as curves and surfaces using differential and integral calculus.

Euclidean geometry forms the foundation of geometry.

He is an expert in topology.

He taught me how to calculate the geometric mean.

Projective geometry is a branch of mathematics that studies geometric objects such as points, lines, and planes and their relationships.

Riemannian geometry is a field of mathematics that studies geometric objects such as curves and surfaces.

Computational geometry is an important field of computer science.

I am learning the basic concepts of differential geometry.

He is an expert in algebraic geometry.