1.2 Define and Measure Angles Flashcards
What is part of line that starts at an endpoint and extends forever in one direction.
A Ray
What is formed by two line segments or rays that share the same endpoint.
An Angle
What of an angle is the common endpoint of the two rays that form the angle.
A Vertex
What are two angles in the same plane with a common vertex and common side, but no common interior points.
Adjacent Angles
What is a angle that measures greater than 0 degrees and less than 90 degrees.
Acute Angle
What is a angle that measures 90 degrees.
Right Angle
What is a angle that measures greater than 90 degrees and less than 180 degrees.
Obtuse Angle
What is a 180 degree angle.
Straight Angle
What is a angle with measure greater than 180 degrees and less than 360 degrees.
Reflex Angle
What is it if the sum of the angle measures to 180 degrees.
Supplementary
What is it if the sum measures to 90 degrees.
Complementary
