Crossnumber Fun B

12345678910
Across
  1. 4. Triangles coinciding exactly when superimposed are said to be?
  2. 8. Two circles having the same centre but different radii are _____ circles.
  3. 9. An irrational number but not a radical?
  4. 10. The irrational root of an integer.
Down
  1. 1. Principal+Interest
  2. 2. The value of cot 0 is?
  3. 3. A rectangular solid in which each face is a square.
  4. 5. The x-coordinate is also known as?
  5. 6. The point of intersections of the medians.
  6. 7. Logarithm of one to any base is?