Illustrated Glossary of Organic Chemistry

Wedge: A symbol used to indicate the position of a bond or group relative to the plane of the paper or screen. A solid wedge indicates this bond or group is projecting out towards the viewer. A broken (hashed) wedge indicates this bond or group is receding away from the viewer.

The carbon-hydrogen bond on the solid red wedge is pointing out of your computer screen towards you. The carbon-carbon bond on the blue broken wedge is receding away from you. The bonds represented by regular lines (i.e., not shown with wedges) lie in the plane of your computer screen. Compare the image shown here with a molecular model from your model kit of the same molecule to help visualize the meaning of the wedges.