The development of fusion reactors could potentially be the key to solving future energy problems.

Tomorrow's flight has been cancelled as planned.

Tomorrow's flight has been cancelled as planned.

He believes that he has extrasensory perception.

He drew an equilateral triangle shape.

He always makes accurate judgments.

In linear algebra, triangular matrices play a very important role.

The number of nuclear-armed countries is increasing worldwide.

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

It's difficult to calculate the area of this hexagon.