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CADD-2 Lesson 4
PTC Labs 6 & 7 Review
| Term | Definition |
|---|---|
| Ellipse | is a curve that is longer than it is wide |
| Major axis | the distance of a line across the long length of an ellipse. |
| Minor axis | the distance of a line across the short length of an ellipse. |
| Regular Polygon | is a plane figure bounded by 3 or more equal straight sides, with the adjoining sides forming equal angles. |
| Inscribed | - regular polygon is drawn inside the imaginary circle. The distance across the corners of the polygon is equal to the diameter of the circle. |
| Circumscribed | regular polygon is drawn outside the circle. The distance across the flats is equal to the diameter of the circle. |
| Surveyor's units | utilize angles measured in degrees, minutes, and seconds in North, South, East, & West |
| Contours | represent the height of the ground above sea level |
| Plat | a map used to show the boundaries of a piece of land and to identify it |
| Cut | the amount of earth removed to change the contour of a piece of land |
| Fill | earth supplied and put in place to change the contour of a piece of land |
| Map Drafting is mostly associated with... | Civil Engineering |
| Setback | Zoning law that restricts the distance permitted from any building to the property line. |
| Survey | Shows the exact size, shape, and levels of a piece of property. |
| Benchmark | A point of known origin used a reference in determining other points in a survey. |
| American System of Surveying | Uses surveyor's angles measured in degrees, minutes, & seconds from North & South. |