Ch 5 crossword

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Across
  1. 3. the same distance from two or more objects
  2. 5. the point of concurrency of the three perpendicular bisectors of a triangle
  3. 8. a perpendicular segment from a vertex to the line containing the opposite side.
Down
  1. 1. the point of concurrency of the three angle bisectors of a triangle
  2. 2. triple a set of three nonzero whole numbers a,b, and c such that a^2+b^2=c^2
  3. 4. circle a circle in which each side of the polygon is tangent to the circle
  4. 5. three or more lines that intersect at one point
  5. 6. the point of the concurrency of the three medians of a triangle. also known as the center of gravity
  6. 7. a segment whose endpoints are a vertex of the triangle and the midpoint of the opposite side
  7. 9. proof a proof in which the statement to be provided is assumed to be false and a contradiction is shown