The Ellipse property returns an Ellipse object that represents the settings for an ellipse shape.
Examples:
The following VBA example converts all ellipses on the current page into pies.
Sub Test()
Dim s As Shape
For Each s In ActivePage.Shapes
If s.Type = cdrEllipseShape Then
With s.Ellipse
.StartAngle = 0
.EndAngle = 90
.Clockwise = True
.Type = cdrPie
End With
End If
Next s
End Sub