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One-point perspective is best used when the object being drawn has
a front surface parallel to the horizon. If the front surface of the
object is not parallel to the horizon, then you need two vanishing
points. This type of drawing is called two-point perspective.
To see how a
box looks with two-point perspective from different perspectives, visit
this site:
Two-point perspective applet |

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Draw a Box Using Two-Point Perspective
Here's
how to draw a box using simple two-point perspective. If you haven't tried
it before it might look complicated, so just draw one step at a time. |

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First, draw your horizon line across the top of the page. Mark two
vanishing points, as far apart as possible.
Draw a short vertical line for the front corner of your box (the black
line in the picture) and then draw a construction line ('orthogonal')
from the top and bottom of the line, to each vanishing point (the dotted
lines).
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Next
draw a vertical line to the left of your 'front corner', between the top
and bottom construction lines (the magenta line). From the top and bottom
points of this line, draw construction lines back to the RIGHT vanishing
point (VP2). Next, draw a similar vertical line to the right of your
'front corner', and from the top and bottom points of this line, draw
construction lines back to the LEFT vanishing point (VP1).
Where the top construction lines intersect, drop a vertical line to the
intersection of the bottom construction lines - this will give you the
back corner of the box (the solid green line). |

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Hide the construction lines and any interior lines (unless it's a fishtank!)
Let the teacher see
your drawing when you’ve finished so that you can get your points
You can try this exercise using a horizon line at different heights, and
placing the box in different places in relation to the vanishing points.
Note that 'realistic' perspective requires vanishing points that are very
far apart - try using a large piece of scrap paper under your drawing
paper, and making your vanishing points as far apart as the table (and
your ruler) will allow. |

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Part 2: Try drawing a set of buildings/skyscrapers with two-point
perspective drawing.
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Begin with a
horizon line and two vanishing points. Draw the front vertical edge of
your first building with all the vanishing lines.
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Complete the two
point perspective view of the first building.
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Next, draw in a
couple of the line taller buildings. Start with the front vertical edge
of each building and draw the vanishing lines. Complete the perspective
view.
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Create additional
buildings and use vanishing lines to add architectural details.
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Erase all
unnecessary lines, color and add other details.
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