Dihedral

Dihedral or polyhedral may refer to:


 * Dihedral angle, the angle between two mathematical planes
 * Dihedral (aeronautics), the upward angle of a fixed-wing aircraft's wings where they meet at the fuselage, dihedral effect of an aircraft, longitudinal dihedral angle of a fixed-wing aircraft
 * Dihedral group, the group of symmetries of the n-sided polygon in abstract algebra
 * Also Dihedral symmetry in three dimensions
 * Dihedral kite, also known as a bowed kite
 * Dihedral doors, also known as butterfly doors
 * Dihedral prime, also known as a dihedral calculator prime
 * In rock climbing, an inside corner of rock