He is known as a comic character.

He is good at deceiving people with lip service.

This figure is an acute triangle.

He taught me how to calculate the area of an obtuse triangle.

At what point in Earth's history does the Triassic period fall?

Tritium is one of the radioactive isotopes.

This contract prohibits interference by a third party.

Please find the cube root of this number.

It's a tradition in my family to go to the Thirteen Buddhas Pilgrimage every year.

His trilogy is very popular.