Adjacent angles are two angles in the same plane with a common ______ and a common ____, but no common interior points.
Vertex; Side
A ___________ is a pair of adjacent angles whose noncommon sides are opposite rays.
Linear Pair
Commplementary angles are two angles whose meaurements have a sum of ____.
90 degrees
_____________ angles are two angles whose meaures have a sum of 180 degrees.
Supplementary
Angle
Two rays with a common endpoint.
Vertex
The common end point of the sides of the angle.
Interior of an Angle
The set of all points between the sides of an angle.
Exterior of an Angle
The set of all points outside an angle.
Measure
Angles are measured in degrees.
Degree
A unit of angle measure.
Acute Angle
An angle that measures greater than 0 degrees and less than 90 degrees.
Right Angle
An angle that measures 90 degrees.
Obtuse Angle
An angle that measures greater than 90 degrees and less than 180 degrees.
Straight Angle
A 180 degree angle.
Adjacent Angles
Two angles in the same plane with a common vertex and a common side, but no common interior points.
Linear Pair
A pair of adjacent angles whose noncommon sides are opposite rays.
Complementary Angles
Two angles whose measures have a sum of 90 degrees.
Supplementary Angles
Two angles whose measures have a sum of 180 degrees.
Verical Angles
The nonadjacent angles formed by two intersecting lines.
Coordinate Plane
A plane that is divided into four regions by a horizontal line called the xaxis and a vertical line called the y-axis.
Leg
One of the two sides of the right triangle that form the right angle.
Hypotenuse
The side opposite the right angle in a right triangle.
Angle Bisector
A ray that divides an angle into two congruent angles.
Congruent Angle
Angles that have the same measure.