vertical_angle
1. [ noun ] (mathematics,geometry) either of two equal and opposite angles formed by the intersection of two straight lines
Related terms: angle
Similar spelling:   vertical_file
  vertical_fin
  vertical_circle
  vertical_tail
  vertical_bank
  vertical_union
  vertical_flute
  verticalness
  vertical_surface
  vertical_section
  verticality
  verticillate
  verticillated