## 1.4 Pairs of Angles

Adjacent Angles: Two angles in the same plane with a common vertex and a common side, nut no common interior points

A Linear Pair: Angles of an adjacent pair whose non-common sides are opposite rays

Complementary Angles: 2 angles whose measures have a sum of 90 deg

Supplementary Angles: angles whose measures have a sum of 180 deg

Verticle Angles: 2 nonadjacent angles formed by two intersecting lines

A Linear Pair: Angles of an adjacent pair whose non-common sides are opposite rays

Complementary Angles: 2 angles whose measures have a sum of 90 deg

Supplementary Angles: angles whose measures have a sum of 180 deg

Verticle Angles: 2 nonadjacent angles formed by two intersecting lines