Geometry

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Across
  1. 2. Divide into 2 equal parts
  2. 3. points that lie on the same plane
  3. 5. coplanar lines that do not intersect
  4. 6. polygon which is equilateral and equiangular
  5. 8. line segments which cross at 90 degree angles are called
  6. 9. two or more circles in the same plane with the same center
  7. 10. the line segment between two points on a given curve
Down
  1. 1. angle whose measure is 180 degree
  2. 3. points that lie on the same line
  3. 4. a triangle having three unequal sides and angles
  4. 6. part of a line that has a fixed starting point but no endpoint
  5. 7. Triangle with 2 equal sides