Creo Direct > Designing in the Creo Direct Environment > Working in Part Mode > Working with 2D Geometry > Creating 2D Geometry > Arcs > About the Arc Tool
  
About the Arc Tool
Use the arc tool to create the following types of arc:
Arc Tool
Description
3-Point / Tangent End
Creates an arc using 3 points or creates an arc tangential to a geometry entity at its endpoints.
Center and Ends
Creates an arc using a center point and an endpoint.
Tangent
Creates an arc tangent to 2 or 3 other entities.
Concentric
Creates 1 or more concentric arcs around an arc or a circle.