To specify the exact size and position of the object, in the Property Inspector (Window > Properties), specify the values in the Transform area. Using these options instead of dragging the object helps you create consistent objects throughout your project.
X
Specifies the position of the X coordinate of the object, in pixels.
Y
Specifies the position of the Y coordinate of the object, in pixels.
Width
Specifies the horizontal width of the object, in pixels.
Height
Specifies the vertical height of the object, in pixels.
Constrain Proportions
Maintains the height-to-width ratio of the object. If either the height or width of the object is changed, the other dimension is changed to maintain the relative proportion of the object.
Angle
Angle of rotation of the objects.