Classifying Angles 1
Angle that is exactly 90 degrees
right angle
Angle that is 120 degrees
obtuse
What is the tool used to measure an angle
protractor
The union of two rays with a common endpoint
Angle
Angle that is less than 90 degrees
Acute angle
Angle that is 45 degrees
acute
What is the center of the protractor called
vertex
Consists of 2 points, goes on forever in both directions
line
Obtuse angle
Angle that is 67 degrees
acute
What is the straight edge of the protractor
Base
A part of a line, ends at two points
line segment
straight angle
Angle that is 92 degrees
obtuse
What part of the protractor do we line up the ray with to 0 degrees
Base (straight edge)
A portion of a line with only 1 endpoint, other end goes on forever
ray