About 3-D effects and shadows
You can add depth to lines, AutoShapes, and freeform objects by applying three-dimensional (3-D) and shadow effects.
By using 3-D effects, you can change the depth of the drawing object and its color, angle, direction of lighting, and surface reflection.
By using shadows, you can add depth to drawing objects, adjust shadow position, and change shadow color. You can apply a limited number of shadow effects to pictures, but you must change the wrapping style from Inline with text to another wrapping style.
You can add either a shadow or a 3-D effect, not both. For example, if you apply a 3-D effect to a drawing object that has a shadow, the shadow disappears.