What are circles with the same radius, congruent, circles

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Across
  1. 1. is the line segment joining two points on a curve.
  2. 5. What is graph behaviour it raises to the left and falls in the right
  3. 7. The graph rises to the left and right.
  4. 8. Are arcs with the same angles mesasure
  5. 9. is the length of the line through the center that touches two points on the edge of the circle.
  6. 11. a line segment with one endpoint at the center of the circle and the other endpoint on the circle.
Down
  1. 2. it is equal of the degree of Central Angles measure MOI
  2. 3. The graph falls to the left and raises to right.
  3. 4. An angles which vertex is the center of the circle
  4. 6. The graph falls to the left and right.
  5. 10. a portion of the boundary of a circle or a curve