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CADD-1 Lesson 4
Drafting Tools & Geometry for Drafting
|Word or Phrase
|Tool used to measure and draw angles.
|Used to accurately draw circles manually.
|Tool used to create horizontal lines manually.
|Used to transfer distances accurately.
|Contains calibrations in some exact proportion to full size, used to measure or layoff distances.
|Used in combination with a T-square to draw lines at various angles or to produce right angles.
|Used to quickly draw circles, ellipses, polygons, etc.
|Used to erase only portions of a drawing while protecting other lines.
|An instrument used to draw irregular shaped curves.
|Durable transparent paper used for permanent drawings.
|Purpose in AutoCAD is to increase accuracy and precision.
|The study of the size and shape of things.
|More than 90, less than 180 degrees.
|Less than 90 degrees.
|Two Angles that add up to 180 degrees.
|Two Angles that add up to 90 degrees.
|Two or more lines that are equal distance apart.
|The distance of a straight line measured from the center of an arc or circle to any point on the circumference.
|Distance of a straight line that passes through the center of the circle touching opposite points on the circumfernece.
|Opposite sides are equal, internal angles are 90 degrees.
|All four sides are equal, internal angles are 90 degrees.
|Three or more equal straight sides with internal angles that are equal. (Example: Hexagon, Octagon)
|Two or more circles that share the same center.
|Two or more circles that do not share the same center.
|Unit of measurement used in the United States. (English or Standard units)
|Drawing to Scale
|Process of reducing or enlarging an object.
|The longest side of right angle.
|A drawing made up of points and lines drawn in proper relationship to one another to solve design problems.
|Name given to a triangle with equal sides and equal angles.
|Triangle with two sides of equal length.
|The distance around a circle.
|Lines drawn at 90 degrees or Right Angles.
|Inside the imaginary circle.
|Outside the imaginary circle.
|A line or arc that connects to another line or arc at only one point without any crossing or intersection, and flows away from that point.
|Used to calculate the hypotenuse of a right triangle.