If text is alligned in such away that is qually distributed on both sides then is called

In a paragraph that is justified, text is aligned with both margins.

Explanation:

justified—text is aligned along the left margin, with letter-spacing and word-spacing adjusted so that the text falls flush with both margins, also known as fully justified or full justification; centered—text is aligned to neither the left nor right margin; there is an even gap on each side of each line.