Geometry Crossword - Autumn Hall 1

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Across
  1. 1. a round plane figure whose boundary
  2. 4. an equation that sets 2 ratios equal
  3. 8. the study of triangles and the relationships between their sides and angles
  4. 9. a plane figure with four equal straight sides and four right angles
  5. 10. first and last terms
  6. 11. line intersects circle at 1 point
  7. 14. figure formed by two rays
  8. 15. a=a
  9. 17. lines in a plane which do not meet
  10. 18. a measure of a polygon or solid figure, taken as a perpendicular from the base of the figure
Down
  1. 2. similar in character, form, or function
  2. 3. distance across the circle through center
  3. 5. a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides
  4. 6. the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs
  5. 7. line that never ends
  6. 8. a=b, b=c, then a=c
  7. 12. a=b, b=a
  8. 13. middle terms
  9. 15. distance from center to edge
  10. 16. measure of the amount of space inside of a solid figure