You can create circles and circular arcs using various methods.
Creating a Circle with a Center and a Radius Creating a Circle with a Center and a Point Creating a Circle with Two Points and a Radius Creating a Circle with Three Points Creating a Circle with a Center and an Axis Creating a Bitangent Circle (with Two Elements) Creating a Bitangent Circle (with at least a Point) Creating a Tritangent Circle Creating a Circle with a Center Element and a Tangent Curve