Q&A for How to Draw a Parabolic Curve (a Curve with Straight Lines)

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  • Question
    How do I change my layout from square to round?
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    Community Answer
    Use a compass to draw a circle, as shown in the example. This can be done on any type of paper.
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    Not Helpful 8 Helpful 16
  • Question
    How do I make a parabolic curve without a ruler?
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    Community Answer
    Use the edge of a piece of paper or anything straight, or go freehand. Visually guess the distances if you don't have graph paper.
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    Not Helpful 18 Helpful 18
  • Question
    How do I draw the center of a parabola?
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    Community Answer
    Technically the center of a parabola is undefined since a parabola exists infinitely.
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    Not Helpful 29 Helpful 10
  • Question
    Can you explain the cube more clearly?
    Community Answer
    Community Answer
    It's just 3 squares at a slanted angle. Just make the same marks on the sides like you would do on a single square for all three parts and do the curves normally.
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    Not Helpful 16 Helpful 7
  • Question
    Where is the focal point in the first example?
    Community Answer
    Community Answer
    In the drawing, there are 10 units in X and 10 in Y. The focal point is where the line is equadistant from the directrix, so it must be at X-10, Y=10.
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    Not Helpful 20 Helpful 5
  • Question
    Where is the vocal point in the first example?
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    Community Answer
    It is at 6 X 6. It must be at the height where the edge is at 45 degrees and where the center is at 90 degrees.
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    Not Helpful 19 Helpful 2
  • Question
    How can straight lines curve?
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    Community Answer
    Straight lines can't curve. It's the individual lines that are positioned at different angles that make it seem like it curves.
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