equ-

123456
Across
  1. 1. having all sides equal in size
  2. 4. imaginary line around earth
  3. 5. same amount
  4. 6. having all angles equal in size
Down
  1. 2. to make equal
  2. 3. day and night and nearly equal in length
  3. 4. making different sets of numbers equal
  4. 5. same measure