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Across
  1. 5. An instrument for measuring angles.
  2. 6. A network of lines that cross each other to form a series of squares or rectangles.
  3. 8. A view of a building seen from one side; a flat representation of one façade.
  4. 9. A path for an electrical current to flow around.
Down
  1. 1. A straight line from the center to the circumference of a circle or sphere.
  2. 2. A reference point, line, or surface in a piece of work.
  3. 3. The allowable deviation from a standard.
  4. 4. A technique used in drawing for shading or texturing.
  5. 6. The branch of mathematics concerned with the properties and relations of points, lines, surfaces, and solids.
  6. 7. A drawing representing three dimensions in two dimensions.