Vocabulary crossword

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Across
  1. 5. math dealing with triangles
  2. 6. a half of a circle or of its circumference.
  3. 8. cause to occur at the same time or rate.
Down
  1. 1. belief in supernatural beings.
  2. 2. arrange for something to take place later
  3. 3. lower in rank or position
  4. 4. not open for discussion
  5. 7. engrossed in thought; distracted.
  6. 8. serving as a symbol