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.

He likes to take a walk in the park at dusk.

In linear algebra, the upper triangular matrix plays a very important role.

A lower triangular matrix is a matrix where all the elements below the main diagonal are zero.

Finding the Summer Triangle is helpful for remembering constellations.

The Winter Triangle is shining in the night sky.

We should always remember the power of Kannon in difficult times.