He drew an equilateral triangle shape.

He made a model of a regular tetrahedron.

This orthophoto shows the details of the terrain very clearly.

Euclidean geometry forms the foundation of geometry.

I am majoring in auditory phonetics at university.

Articulatory phonetics is a study about the production of speech sounds.

Acoustic phonetics is the study of the physical properties of speech.

I am majoring in microbiology at university.

He is interested in geometrical shapes.

I studied calculus at university.