An outlined linear cube and a circle inside.

Outlined Cube With Circle Inside

A circle with a thin outline and a smaller circle at the center.

Concentric Circles

A stop button or an outlined square inside a circle.

An outlined circle with four dots placed at intervals along the outline.

An outlined circle with rays coming out of it and two smaller circles overlapping.

A circle with stars and outline symbolizing a coin.

An outlined cylinder with a circle inside.