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  1. #1
    Join Date
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    Question Three Overlapping Circles - making a Venn Diagram

    This Challenge it to present three overlapping circles whose centres touch the edge of the other two circles.

    Again, the construction is to be as simple and as accurate as the Xara Desktop application allows.
    This time, any of the circles can be cloned for use in your construction.
    You can assume the solution of the previous two Circle Challenges or start afresh.

    Click image for larger version. 

Name:	RGB Venn.png 
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ID:	122446

    Acorn
    Acorn - installed Xara software: Cloud+/Pro+ and most others back through time (to CC's Artworks). Contact for technical remediation/consultancy for your web designs.
    When we provide assistance, your responses are valuable as they benefit the community. TG Nuggets you might like. Report faults: Xara Cloud+/Pro+/Magix Legacy; Xara KB & Chat

  2. #2

    Default Re: Three Overlapping Circles - making a Venn Diagram

    Are you sure the example image is correct, as the edges of the other 2 circles are quite far away from the actual center of the circle

    The way I would do it manually would be with help of equilateral triangle, and the radius of the circles would then be the same as the length of the sides on that triangle.

  3. #3
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    Default Re: Three Overlapping Circles - making a Venn Diagram

    My bad, in my haste I forgot to recheck:

    Click image for larger version. 

Name:	RGB Venn.png 
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ID:	122455

    Sorry to be awkward, nothing other than circles.

    Acorn
    Acorn - installed Xara software: Cloud+/Pro+ and most others back through time (to CC's Artworks). Contact for technical remediation/consultancy for your web designs.
    When we provide assistance, your responses are valuable as they benefit the community. TG Nuggets you might like. Report faults: Xara Cloud+/Pro+/Magix Legacy; Xara KB & Chat

  4. #4
    Join Date
    Jul 2007
    Location
    Brockville, Ontario, Canada.
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    Default Re: Three Overlapping Circles - making a Venn Diagram

    Same as my "Three Touching Circles" solution except Nudge = 100

    Open Options
    Units > Set Units to Pixels
    General > Set Angle Constraint to 60 and set Nudge size to 100
    Draw Circle > Edit size on Infobar to 200 x 200
    Clone (CTRL-K) twice
    Select one circle > Nudge Left
    Marquee Select ALL > CTRL-Rotate to 60° anti-Counter-Clockwise.
    Select top circle > Nudge left
    Colour to suit.
    Last edited by ss-kalm; 26 October 2018 at 07:03 PM.
    Keith
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    There are 10 types of people in this world .... Those who understand binary, and those who don't.

  5. #5
    Join Date
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    Placitas, New Mexico, USA
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    Default Re: Three Overlapping Circles - making a Venn Diagram

    Screen transparency using red, green, and blue produces white. Additive color. The areas of overlap produce Cyan, Magenta, and Yellow. You can't make this stuff up.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Additive.png 
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ID:	122457  

  6. #6
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    Default Re: Three Overlapping Circles - making a Venn Diagram

    Gary ... How did you calculate 300 x 286?
    Keith
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    There are 10 types of people in this world .... Those who understand binary, and those who don't.

  7. #7
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    Default Re: Three Overlapping Circles - making a Venn Diagram

    Heh heh. I cheated. But it works. I was never good at math.

    At first I thought it would be 300 x 300 but that did not work. So I reverse engineered the problem.

  8. #8
    Join Date
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    Alexandria, VA, USA
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    968

    Default Re: Three Overlapping Circles - making a Venn Diagram

    ...I remember Venn!

    Well done all!
    ~Fred

  9. #9
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    Default Re: Three Overlapping Circles - making a Venn Diagram

    Quote Originally Posted by gwpriester View Post
    Screen transparency using red, green, and blue produces white. Additive color. The areas of overlap produce Cyan, Magenta, and Yellow. You can't make this stuff up.
    Sorry Gary, no rectangle allowed, only circles.

    Acorn
    Acorn - installed Xara software: Cloud+/Pro+ and most others back through time (to CC's Artworks). Contact for technical remediation/consultancy for your web designs.
    When we provide assistance, your responses are valuable as they benefit the community. TG Nuggets you might like. Report faults: Xara Cloud+/Pro+/Magix Legacy; Xara KB & Chat

  10. #10
    Join Date
    Aug 2000
    Location
    Placitas, New Mexico, USA
    Posts
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    Default Re: Three Overlapping Circles - making a Venn Diagram

    You never said we could not use rectangles. It is my math for the math-challenged solution.

 

 

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