His proposal was already perfect, but her opinion was an unnecessary addition.

He is known as a comic character.

This figure is an acute triangle.

He is good at deceiving people with lip service.

He participated in the parade while waving the tricolour.

Tritium is one of the radioactive isotopes.

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

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

This contract prohibits interference by a third party.

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