Intro to Geometry - Vocabulary

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Across
  1. 3. a line that intersects two or more lines
  2. 7. the distance across the center of a circle
  3. 10. a many sided, closed, simple figure whose sides are line segments
  4. 12. two angles that share a common vertex and a common side
  5. 14. a solid with parallel congruent polygons for bases and parallelograms for faces
  6. 15. the distance from the center of the circle to any point on the circle
  7. 19. figures having the same size and shape
  8. 20. two angles whose sum is 90 degrees
  9. 22. figures having the same shape but not necessarily the same size
  10. 25. two-dimensional representation of a three-dimensional figure that can be folded up into the three-dimensional figure
  11. 26. number of square units needed to cover a surface
  12. 27. lines in a plane that will never intersect
  13. 28. a point inside a circle that is equidistant from each point on the circle
  14. 29. a polyhedron with a polygon for the base and triangular faces that meet at the apex
  15. 30. the amount of space contained in a solid; measured in cubic units
Down
  1. 1. tow angles whose sum is 180 degrees
  2. 2. a drawing that shows the original drawing or object with its accurate dimensions enlarged or reduced by a scale factor
  3. 4. an angle formed by one side of a polygon and the extension of an adjacent side
  4. 5. opposite, congruent angles formed when two lines intersect
  5. 6. a constant of proportionality; how many times larger or smaller the measurement of the actual object is compared to the scaled drawing
  6. 8. a prism where all of the lateral faces are rectangles
  7. 9. four sided polygon
  8. 11. distance around a circle
  9. 13. a transformation where all distance are changed by a common factor
  10. 15. transformation where a figure turns around a fixed line
  11. 16. a two-dimensional shape that is exposed by making a straight cut through a section of a three-dimensional figure
  12. 17. total area of the exterior faces of a three-dimensional figure
  13. 18. a transformation that flips the plane over a fixed line
  14. 21. the ratio of the circumference to the diameter, represented by the Greek letter π
  15. 23. line dividing a figure into two congruent halves
  16. 24. a ratio that compares the measurements used in a scale drawing with the actual measurements