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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.
Attachment 122446
Acorn
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.
1 Attachment(s)
Re: Three Overlapping Circles - making a Venn Diagram
My bad, in my haste I forgot to recheck:
Attachment 122455
Sorry to be awkward, nothing other than circles.
Acorn
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.
1 Attachment(s)
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.
Re: Three Overlapping Circles - making a Venn Diagram
Gary ... How did you calculate 300 x 286?
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.
Re: Three Overlapping Circles - making a Venn Diagram
...I remember Venn!;))
Well done all!
Re: Three Overlapping Circles - making a Venn Diagram
Quote:
Originally Posted by
gwpriester
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
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.