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Supplementary and complementary angles

Special angle pairs.
Certain pairs of angles have special names. Those names are in some cases based upon their positions relative to one another. In other cases they are based upon the angles' degree measures adding up to a certain amount.

Complementary angles.
Any two angles that add up to 90º are called complementary angles.  <1 and <2 are adjacent complementary angles. <3 and <4 are nonadjacent complementary angles.

Supplementary angles.
When two angles add up to a total of 180º, they are called supplementary angles. <5 and <6 are adjacent supplementary angles while <E and <F are nonadjacent supplementary angles

Two angles that share a vertex and share a common side that separates them. Angles 1 and 2 are examples of adjacent angles.

Vertical angles.
When two lines intersect so as to form four angles, the angles on opposite sides of the common vertex are known as vertical angles. Of the four angles formed at M, <1 and <3 are vertical angles. So are <2 and <4.

Congruent angles.
Congruent angles are angles that have exactly the same measure. List the complementary and supplementary angles: Supplementary angles: <4&<5

Complementary angles: <1&<2,