Question 740841: I am trying to create a three circle Venn diagram with unions and intersections. I can answer the question written out in a list form, but I can't seem to understand how it looks on a three circle Venn diagram. We are using attribute blocks via a virtual manipulative kit. There are 3 colors - red, blue, yellow; 4 shapes - square, circle, hexagon and triangle and 2 sizes - large and small. So total, there are 24 different attribute blocks. The question we were given is to show: (S U T) U NR, which is (square union triangle), union not red. I understand union will include all of those things, but again, can't seem to understand what that will look like on a Venn diagram.
Since I can't upload the picture I took, it looks like this: top left circle - all squares, top right circle - all triangles, bottom circle - anything that isn't red, outside the circles - red circles and red hexagons. HELP!!!
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website!
The way I would do it, just doing a Venn drawing, would be to have a Universe rectangle with two circles in it. One of the circles would represent red circles and the other would represent red hexagons (the circles would NOT overlap). Then I would shade in everything in the universe rectangle EXCEPT the interior of the two circles. The desired set is the complement of the union of red circles and red hexagons.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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