Angles

  1. What is a ray?
    A ray is defined as a point on a line together with all points of the line on one side of that point.
  2. What is an angle?
    An angle is defined as the union of two rays with a common endpoint, the vertex.

    Also often thought of as bing formed by rotating one ray away from a fixed ray as indicated by angle Image Upload 1 and an arrow.

    Image Upload 2
  3. What is the initial side?
    The initial side is the fixed ray.
  4. What is the terminal side?
    The terminal side is the rotated ray.
  5. What is a central angle?
    A central angle is an angle whose vertex is the center of a circle. The arc of the circle through wich the terminal side moves is the intercepted arc.
Author
athlon52
ID
149453
Card Set
Angles
Description
Degree Measure of Angles
Updated