equ-, equi-

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Across
  1. 1. to make equal
  2. 3. all angles equal in size
  3. 4. when day and night are equal in length
  4. 5. all sides equal in length
Down
  1. 1. imaginary line around Earth
  2. 2. a mathematical formula for making different sets of numbers equal
  3. 3. same amount
  4. 4. having the same