Section 4.1 Angles and Radians

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Across
  1. 2. An angle whose vertex is at the center of the circle
  2. 6. To find a coterminal angle in degrees, you must add or subtract this number of degrees from the original angle
  3. 8. Formed by two rays that have a common endpoint
  4. 10. The endpoint of an angle's initial and terminal side
  5. 13. Angles that share a terminal side, but may have different measures
  6. 14. An angle that measures more than 90 degrees but less than 180 degrees
Down
  1. 1. The name of an angle whose terminal side lies on the x-axis or y-axis
  2. 2. The direction a positive angle rotates from the positive x-axis
  3. 3. The position of an angle when the vertex is at the origin and the initial side lies along the positive x-axis.
  4. 4. The measure of the central angle of a circle that intercepts an arc equal in length to the radius of the circle.
  5. 5. An angle that measures exactly 180 degrees
  6. 7. A part of a line that has only one endpoint and extends forever in the opposite direction
  7. 9. An angle that measures less than ninety degrees but more than zero degrees
  8. 11. An angle that measures exactly 90 degrees
  9. 12. The direction a negative angle rotates from the positive x-axis
  10. 15. To find a coterminal angle in radians, you must add or subtract this value