crossword

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Across
  1. 5. 2 angles and a side opposite them are congruent
  2. 6. 2 angles and included side are congruent
  3. 9. the point at which the 3 altitudes intersect in a triangle
  4. 12. a segment connecting the midpoints of 2 sides of the triangle
  5. 14. the perpendicular bisector of the sides of a triangle intersect at a point
  6. 15. the angle bisector of the angle of a triangle intersect at a point
  7. 16. three pairs of congruent sides
  8. 17. 3 medians of a triangle intersect at a point
  9. 20. a line segment or ray that divides a segment into 2 equal parts and is perpendicular to the segment
Down
  1. 1. a triangle is equilateral if and only if it is equiangler
  2. 2. has 3 sides
  3. 3. Planes that never intersect
  4. 4. a right angle= 90
  5. 7. non-coplanar lines that never intersect
  6. 8. a segment joining a vertex to the midpoint of the opposite side
  7. 10. used to find a missing side length on a right angle triangle
  8. 11. the Hypotenuse and any one leg of a right triangle are congruent
  9. 13. a line segment or ray that divides an angle into 2 equal parts
  10. 16. 2 sides and included angle are congruent
  11. 18. A segment that connects a vertex of a triangle to the midpoint of the opposite side
  12. 19. 2 coplanar lines that never intersect