He is studying late into the night to learn a new computer language.

Please calculate the area of this right-angled triangle.

I analyze data using a spreadsheet software.

Let's calculate the area of this right-angled triangle.

Please calculate the area of this right triangle.

He drew an equilateral triangle shape.

He is a famous author and a person who is respected by many people.

In this area, many unexploded ordnances are found as a remnant of the war.

My father runs a real estate business.

His hobby is collecting cel drawings from old animations.