antenna pattern

1.E and H-plane patterns(note:we're taking about far-field pattern)
The 3-D antenna pattern is useful for illustrative purpose. The cross-section/plane diagrams of this 3-D pattern is more useful for normal application. Two cross-section planes:
1.E-plane
for a linearly-polarized antenna, this is a plane made up of E-field vector and the direction of max. radiation. The E-plane determines the polarization of the EM wave.
For vertically- polarized antenna, E-plane is elevation plane/vertical plane. For horizontally-polarized antenna, E-plane is azimuth plane.
For dipole antenna, E-plane contains the dipole antenna and
2.H-plane
made up of H-field vector and direction of max. radiation. H-plane perpendicular to E-plane as in far field (E perpendicular to H).

E and H-planes share one axis: direction of max. radiation.