He won the mahjong game with an amazing four kongs.

He is always grumbling about trivial things, it's really annoying.

My new four-wheeled vehicle is very fast.

My new four-wheeled vehicle is very fast.

He goes to the gym every day to train his quadriceps.

He made a model of a regular tetrahedron.

An intercontinental ballistic missile is a weapon with a very large destructive power.

The launch of intercontinental ballistic missiles has become an international issue.

The intertransversarius muscle is an important part of our body, especially part of the back muscles.

This shape is a parallelogram.