He is doing squats to train his quadriceps femoris muscle.

Please calculate the quartiles of this data set.

This regular tetrahedron is composed of equilateral triangles on all sides.

This shape is a parallelogram.

My four treasures of the study are a fountain pen, a pencil, an eraser, and a ruler.

My high school has very strict rules.

He was arrested for obstruction of public duties.

He is a genius, but even experts sometimes make mistakes. He also makes mistakes sometimes.

Related items are listed at the bottom of this article.

Biotechnology is a science that understands the mechanisms of life and utilizes them.