Geometry crossword

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Across
  1. 1. the line segment between two points on a given curve
  2. 4. a straight line going through the center of a circle
  3. 5. a triangle with an angle of 90 degrees
  4. 8. line segments that cross each other
  5. 9. a rectangle with 4 equal lengths
Down
  1. 2. a line going from the center of a circle going to the circumference
  2. 3. a parallelogram having four right angles
  3. 6. a triangle which has two sides equal
  4. 7. an angle greater than 90 degrees but less than 180 degrees