Hi, how are you?

One of the angles of the triangle is 90 degrees.

I need to connect two pieces of wood.

I went to the library to borrow some books.

Exercising regularly is good for your health.

She has significantly improved her piano skills.

The artist sketched the outline of the landscape.

There are eighty students in the class.

I will participate in the marathon next month.

The internal structure of the building is well-designed.