Geometry Vocabulary

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Across
  1. 1. half of a circle
  2. 5. corresponding parts of congruent triangles are congruent
  3. 9. a change to a figure (translation,rotation,reflection,dilation)
  4. 10. the same or equal
  5. 13. the amount of space inside a 3-D figure
  6. 14. a branch of math that uses sine, cosine, tangent
  7. 16. angles that add up to 180
  8. 17. the amount of space inside a 2-D figure
  9. 18. the distance from the center of a circle to the outside
Down
  1. 2. angles that add up to 90
  2. 3. the longest side of a triangle
  3. 4. a figure whose angles add up to 180
  4. 6. the theorem that states a2+b2=c2
  5. 7. a drawing made by a compass or straightedge
  6. 8. angles that look exactly the same; in the same position
  7. 9. a diagonal line that cuts through parallel lines
  8. 11. a figure with at least 1 pair of parallel sides
  9. 12. angles across from each other
  10. 15. the property in which a = a
  11. 16. figures that are the same shape but not the same size