Geometry

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Across
  1. 2. to have the same shape and size
  2. 5. shape with 4 sides and 4 right angles
  3. 6. when 2 lines that are parallel are intersected by a transversal line
  4. 8. when they cross each other at one single point
Down
  1. 1. an angle less that 90 degrees
  2. 2. the perimeter of a circle or ellipse
  3. 3. either of 2 angles whose sum in 90 degrees
  4. 4. 2 or more lines that lie in the same plane and never intersect eachother
  5. 7. each angular point of a polygon