He was drawing a figure using a set square.

Triangulum is one of the beautiful constellations shining in the autumn night sky.

He yelled at me, looking at me with fury.

Please throw the leftover food in the triangular sink basket in the kitchen.

I am working using a spreadsheet software.

Please check the statement of account.

It's difficult to solve this formula.

He solved complex mathematical problems using his new calculator.

His calculating nature sometimes causes problems.

Shinya is my best friend.