Puzzle of the Day

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Across
  1. 3. What measurement tool did Hypatia help construct?
  2. 5. A subject Hypatia gave lectures on.
  3. 6. Where was Hypatia born?
Down
  1. 1. Who was Hypatia's father?
  2. 2. Hypatia's religion
  3. 4. What navigation tool did Hypatia help construct?