Creating Three Point Arcs Starting with Limits

You can create a three point arc by starting creating the arc limit points first.

Before you begin:

Ensure that Geometric Constraints and Dimensional Constraints are activated in the Sketch tools toolbar.

Related Topics
Creating Arcs
Creating Three Point Arcs
More about Arcs

  1. Click Three Point Arc Starting With Limits in the Profile toolbar (Circle sub-toolbar).

  2. Click anywhere in the geometry area to locate the first arc point, or if you know where this point must be located, use the Sketch tools toolbar which now displays value fields for defining the point coordinates. These value fields are:


    • H: horizontal

    • V: vertical

    • R: radius

  3. For the purposes of our scenario, use the Sketch tools toolbar. Position the cursor in the desired fields to key in the desired values and press Enter. For example, enter:


    • Start Point (H: 25mm and V: 37mm)

  4. Repeat the operation to define the end points and then the second point, that is the point which the arc will go through).


    • End Point (H:25mm and V: 7mm)
    • Second Point (R: 15mm)

    When done, the three point arc results as shown here:



    Tip: Constraints are assigned to this arc on the condition that:
    • You activated Dimensional Constraints in the Sketch tools toolbar before starting the scenario.
    • You entered coordinate values in the fields (you did not create the profile just by clicking)