two angles whose sum is 90 degrees
complementary
two or more points that fall on the same plane
coplanar
Angle Abc is complementary to angle CBD. If angle ABC is 55 degrees, what is angle CBD?
45 degrees
two angles whose sum are 180 degrees
Supplementary
two or more points that do not fall on the same line
non-collinear
Angle COD is vertical to angle AOB. If angle COD equals 33 degrees, then how much does angle COD equal?
33 degrees
a pair of adjacent angles whose non-common sides are opposite rays.
linear pair
the place where two planes meet is called what
a line
What kind of angle is angle ABC
obtuse angle
two angles whose sides are opposite rays
vertical angles
the sides of an angle are called what
a ray
where is the vertex of an angle located
in the middle of two rays
two coplanar angles with a common side, a common vertex, and no common interior points.
Adjacent angles
name the plane using one letter
plane p
give three names for this angle
angle ABC
angle CBA
angle B