Please teach me how to calculate the circumcenter of this triangle.

Sotonami is my best friend.

The outward appearance of that building is very modern, attracting people.

He has experience living in a foreign country.

That proposal is completely unthinkable.

It's difficult to find a list of kanji for names.

Coitus interruptus is one method of contraception, but it is not completely reliable.

This book explains in detail about the use of foreign words.

He is doing special exercises to strengthen his supinator.

The external intercostal muscle plays an important role in respiration.