Angle 2 and angle 1 are vertical angles; thus, they are _______. *
not congruent
complementary
congruent
supplementary
Lines on the same plane that do not intersect are called _____ lines. *
parallel
non-intersecting
noncoplanar
perpendicular
Lines that intersect and form four right angles are called _____ lines. *
perpendicular
horizontal
vertical
parallel