Geometry Vocabulary

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Across
  1. 3. two intersecting lines
  2. 5. to divide into two equal parts
  3. 7. a line segment that has both endpoints on a circle
  4. 8. the event in which both the first event and second event occur
  5. 11. two angles that add to 180 degrees
  6. 14. the distance around a 2-dimensional object's exterior (outside)
  7. 16. half the measure of the corresponding central angle
  8. 18. all four sides are congruent
  9. 19. a line segment that goes from one corner to another, but is not an edge
Down
  1. 1. two angles that add to 90 degrees
  2. 2. a point on a line segment that divides it into two equal parts
  3. 4. used when trying to find a side of a right triangle
  4. 6. all the outcomes in the sample space that are not in the original event
  5. 9. a piece of pizza, a portion of the circles area
  6. 10. means "at right angles"
  7. 12. two pairs of adjacent congruent sides
  8. 13. the event in which the first event or the second event occur
  9. 15. a portion of the circles circumference
  10. 17. a rigid transformation that involves flipping a figure over the line of reflection
  11. 20. the number of square units needed to fill up a region on a flat surface