1. (geometry) a pair of angles that sum to 180 degrees

Encyclopedia: Supplementary angles

• Equetus
• Equetus lanceolatus
• Equetus pulcher
• equi-
• equiangular
• equiangular triangle
• equid
• Equidae
• equidistant
• equidistribution
• equilateral
• equilateral triangle
• equilibrate
• equilibration
• equilibrise
• equilibrist
• equilibrium
• equilibrium constant
• equilibrium law
• equilibrize
• equine
• equine distemper
• equine encephalitis
• equine encephalomyelitis
• equinoctial