Geometry of Design Key Terms

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Across
  1. 7. 1. A triangle located round a polygon such as a circle. 2 To draw a figure around another, touching it at points but not cutting it.
  2. 8. Any plane figure bounded by straight lines.
  3. 10. A solid composed of two congruent circles in parallel planes, their interiors, and all the line segments parallel to the axis with endpoints on the two circles.
  4. 13. A 3D point where the total weight of the body may be considered to be concentrated.
  5. 16. A straight line from the center to the circumference of a circle or sphere.
  6. 18. A straight line passing from side to side through the center of a circle or sphere.
  7. 19. A straight or curved line that intersects a circle or arc at one point only.
  8. 21. A shape generated by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant and equal to the major axis
  9. 23. The number of square units required to cover a surface.
  10. 25. The amount of matter in an object or the quantity of the inertia of the object.
  11. 26. The lines of intersection created from three mutually perpendicular planes, with the three planes’ point of intersection at the centroid of the part.
  12. 27. The amount of rotation needed to bring one line or plane into coincidence with another, generally measured in radians or degrees.
  13. 28. A parallelogram with 90 degree angles. A square is also a rectangle.
  14. 29. A curve formed at the interior intersection between two or more surfaces.
  15. 33. Two or more exterior surfaces rounded at their intersections.
  16. 34. The squared dimensions of the exterior surface
  17. 35. The curved upper surface of a liquid column that is concave when the containing walls are wetted by the liquid and convex when not.
Down
  1. 1. To draw a figure within another so that their boundaries touch but do not intersect.
  2. 2. Each angular point of a polygon, polyhedron, or other figure.
  3. 3. A triangle with one angle that is greater than 90 degrees.
  4. 4. A polygon with equal angles and equal sides.
  5. 5. A triangle that contains only angles that are less than 90 degrees.
  6. 6. A 3D point defining the geometric center of a solid.
  7. 9. The numerical value of the ratio of the circumference of a circle to its diameter of approximately 3.14159.
  8. 11. The measure of mass density is a measure of mass per volume.
  9. 12. A round plane figure whose boundary consists of points equidistant from the center
  10. 14. A polygon with three sides.
  11. 15. A triangle that has a 90 degree angle.
  12. 17. A table located in the bottom right-hand corner of an engineering drawing that identifies, in an organized way, all of the necessary information that is not given on the drawing itself. Also referred to as a title strip.
  13. 20. A four-sided polygon.
  14. 22. A solid geometric figure whose two ends are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms.
  15. 24. A four-sided polygon with both pairs of opposite sides parallel.
  16. 30. The amount of three-dimensional space occupied by an object or enclosed within a container.
  17. 31. A regular polygon with four equal sides and four 90 degree angles.
  18. 32. 1. An imaginary line through a body, about which it rotates. 2. An imaginary line about which a regular figure is symmetrically arranged. 3. A fixed reference line for the measurement of coordinates.