Math

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Across
  1. 4. Length of an __ of a sector with r qith degree 0
  2. 6. Longest chord
  3. 8. Length of two tangents from an external point
Down
  1. 1. Circular region enclosed by chord and arc
  2. 2. Perpendicular to radius through point of contact
  3. 3. Formula is area of a ___ of a circle with r
  4. 5. Line segment from centre to circumference
  5. 7. Circular region enclosed by two radii and arc