Section Four
Pair of Angles
Adjacent angles: are two angles in the same plane with a common vertex and a common side, but no common interior points.
Linear pair: is a pair of adjacent angles whose noncommon sides are opposite rays.
Complementary and Supplementary Angles:
Complementary: are two angles whose sums have a measure of 90 degrees.
Supplementary: are two angles whose measures have a sum of 180 degrees.
Vertical Angles: are two nonadjacent angles formed by two intersecting lines.
Pair of Angles
Adjacent angles: are two angles in the same plane with a common vertex and a common side, but no common interior points.
Linear pair: is a pair of adjacent angles whose noncommon sides are opposite rays.
Complementary and Supplementary Angles:
Complementary: are two angles whose sums have a measure of 90 degrees.
Supplementary: are two angles whose measures have a sum of 180 degrees.
Vertical Angles: are two nonadjacent angles formed by two intersecting lines.