9-Point Circle

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Across
  1. 3. CIRCLE TOUCHING THE VERTICES OF A TRIANGLE
  2. 5. POINT OF CONCURRENCY OF ANGLES BISECTOR OF A TRIANGLE
  3. 7. POINT OF CONCURRENCY OF MEDIANS OF A TRIANGLE
  4. 8. POINT OF CONCURRENCY OF ALTITUDES OF A TRIANGLE
Down
  1. 1. PERPENDICULAR FROM VERTEX OF A TRIANLE TO ITS OPPOSITE SIDE
  2. 2. CIRCLE TOUCHING THE SIDES OF A TRIANGLE
  3. 4. POINT OF CONCURRENCY OF PERPENDICULAR BISECTOR OF SIDES OF A TRIANGLE
  4. 6. LINE SEGMENT JOINING VERTEX OF A TRIANGLE TO THE MID POINT OF ITS OPPOSITE SIDE