Usando Api
Private Declare Function Arc Lib "gdi32" (ByVal hdc As Long, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long, ByVal X3 As Long, ByVal Y3 As Long, ByVal X4 As Long, ByVal Y4 As Long) As Long
Private Sub Form_Load()
Me.ScaleMode = 0 'escala de Usuario
'en este ejemplo scalamos de 0 a 200 en x
'y de 200 a 0 en y es decir 200 en la parte
'superior y 0 en la parte inferior de la
'forma
'Me.Scale (X1, Y1)-(x2, y2)
Me.scale(0,200) - (200,0)
'Borramos
Me.Cls
'Primero que el dibujo sea percistente
Me.AutoRedraw = True
'Generamos un arco
Arc Me.hdc, 0, 0, 100, 100, 100, 50, 50, 100
Arc Me.hdc, 49, 49, 149, 149, 49, 99, 99, 49
End Sub
Espero te sirva saludos........