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# Geometric Terms

### Chapter 19

WordDefinition
line a straight path extending forever in both directions
point an exact location in space
line segment a part of a line with two endpoints
ray a part of a line with one endpoint that continues in one direction
angle two rays with a common endpoint
right angle an angle that measures 90 degrees
degree a unit of measure for angles
acute angle an angle less than 90 degrees
obtuse angle an angle greater than 90 degrees and less than 180 degrees
intersecting lines lines that cross to form angles
perpendicular lines lines that cross to form right angles
parallel lines lines that never cross
Venn diagram a diagram that shows the relationships among sets
DPI is the number of dots (or pixels - PPI) that fit horizontally and vertically into a one-inch measure. The more dots per inch, the more detail is captured and the sharper the image.
density The higher the density of an image, the greater the opacity. The lower the density, the more transparent the image is.
obtuse angle larger than 90
rotate A function within graphic software that enables a user to rotate an image or pixel by any number of degrees
acute less than 90
square rectangle with 4 equal sides
Blocking Sticking together of printed sheets causing damage when the surfaces are separated.
rulers Alignment or measurement aids found in page layout software.
resolution The resolution of an image is an important factor in determining the attainable output quality. The higher the resolution of an image, the less pixilated it will be and the curves of the image will appear smoother.
Fiber filaments of plant tissue, such as cottom fiber and wood fiber. Some specialty papers may contain synthetic fibers, such as rayon or nylon. see also ingredients of paper.
Created by: Phyl