; 1.4 Perspective_ Orthogonal and Isometric Drawings
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1.4 Perspective_ Orthogonal and Isometric Drawings

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									1.4 Perspective, Orthogonal
  and Isometric Drawings
           Pg.   23
     Vocabulary
• Horizon Line
  – A horizontal line that contains the vanishing
    point(s) of a drawing
• Isometric Drawing
  – A drawing of a three-dimensional object in
    which parallel edges of the object are shown as
    parallel line segments in the drawing
• One-Point Perspective
  – A drawing with one vanishing point
• Orthogonal (Orthographic) Drawing
  – A drawing that depicts a three-dimensional
    object by detailing three views of the object
Vocabulary (cont)
• Perspective Drawing
  – A drawing made on a two-dimensional surface in
    such a way that three-dimensional objects
    appear true-to-life
• Two-Point Perspective
  – A drawing with two vanishing points
• Vanishing Point
  – A point at a distance from the observer where
    two or more lines of a drawing appear to
    intersect
Vanishing Point and
   Horizon Line
  Locate the vanishing point and the
  Horizon Line

Vanishing
Point




Horizon Line
One Point Perspective
  • Draw a cube in one-point perspective
    – Every vertex connects to one point
Two-Point Perspective
  • Draw a cube in two-point perspective
    – Every vertex connects to both points
      Orthogonal
(Orthographic) Drawings
  • Draw the figure from the Orthographic
    – Pg. 25
      Orthogonal
(Orthographic) Drawings
  • Draw the figure from the Orthographic
    – Pg 25
Homework

  Pg.    26

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