A circle divided into fifths.

A circle divided into fifths with one fifth separated.

A circle divided into fifths with one fifth shaded.

A circle divided into fifths with two fifths shaded.

A circle divided into fifths with three fifths shaded.

A circle divided into fifths with four fifths shaded.

Four fifths of a circle.

One fifth of a circle.

Three fifths of a circle.

Two fifths of a circle.