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.

He solved the problem in a scientific way.

This reaction occurs through a chemical process.

He is good at tactical thinking.

He exercises every day and leads a healthy life.

Fundamental knowledge of mathematics is necessary to solve advanced problems.

This park was completely artificially made.