MATHEMAGICA (ROUND 2)

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Across
  1. 4. Unit for measuring angles of a circle.
  2. 5. If a + bi = z, then a - bi is called as complex _______.
  3. 7. Name of the symbol φ.
  4. 8. The diagram made for representing complex number using co-ordinate axes.
  5. 9. SI Unit for measuring the angle made at the center of a circle by an arc whose length is equal to the radius of the circle.
  6. 10. A matrix is not invertible if it's determinant is _______.
Down
  1. 1. For which geometric figure, equation x² + y² + z² = 1 holds?
  2. 2. Vectors lying on the same plane are _______ vectors.
  3. 3. No. of ways for arranging objects when not considered in order.
  4. 6. Name of mathematician who gave the mathematical constant "e".