To create circles, you can specify various combinations of center, radius, points on the circumference, and points on other objects. You can create circles in several ways. The default method is to specify the center and the radius.

Draw a circle by center and radius
• Click Menu “Draw”, and then choose “circle”
• Specify the center point.
• Enter a radius value, or specify a point.

Draw a circle with two points
Create a circle based on two endpoints of the diameter.
• Click Menu “Draw”, and then choose “circle two points”
• Specify the first point on diameter.
• Enter a value, or specify a second end of diameter.

Draw a circle with three points
Create a circle based on three points on the circumference.
• Click Menu “Draw”, and then choose “circle three points”
• Specify the first point on circle.
• Specify the second point on circle.
• Specify the third point on circle.

Draw a circle tangent to two objects
Create a circle with a specified radius and tangent to two objects. The program draws the circle of the specified radius whose tangent points are closest to the selected points.
• Click Menu “Draw”, and then choose “circle tangent-tangent-radius”
• Input specify radius value
• Select the first entity
• Select the second entity
• Input “I” or “C” to select inscribed circle or Circumscribed circle

Sometimes more than one circle matches the specified criteria. The program draws the circle of the specified radius whose tangent points are closest to the selected points.

Draw a circle tangent to three objects
• Click Menu “Draw”, and then choose “circle tangent-tangent-tangent”
• Select the three entities
• Input “I” or “C” to select inscribed circle or Circumscribed circle

Sometimes more than one circle matches the specified criteria. The program draws the circle of the specified radius whose tangent points are closest to the selected points.