2 Tangents, Radius

[2 Tangents, Radius] command will generate an arc by specifying

Step 1

While "Specify 1st base line" prompt is displayed, specify around a point on a curve where the generating arc's end point will touch

Step 2

While "Specify 2nd base line" prompt is displayed, specify around a point on a curve where the generating arc's the other end point will touch

Step 3

Press OK button after inputing the radius in the daialogue box.