MHB Segments in a Circle: How Many Parts Can Form & What Will It Look Like?

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A circle divided into 6 segments can form a maximum of 22 parts, as determined by the formula (c(c+1)/2) + 1, where c represents the number of cuts. The sequence of maximum parts follows a pattern: 2, 4, 7, 11, 16, and 22 for 1 to 6 segments. To achieve the maximum number of pieces, all lines must intersect without crossing at the same point. The discussion confirms that the initial assumption of 22 parts is accurate. Understanding these principles is essential for visualizing the configuration of segments in a circle.
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If a circle has 6 segments, how many maximum parts which can be formed? I know that 1 segment makes 2 parts, 2 segments make 4 parts, and 3 segments makes 7 parts. Judging by the pattern, is the answer 22? What will the exact picture of the circle be? Thank you very much.
 
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Monoxdifly said:
If a circle has 6 segments, how many maximum parts which can be formed? I know that 1 segment makes 2 parts, 2 segments make 4 parts, and 3 segments makes 7 parts. Judging by the pattern, is the answer 22? What will the exact picture of the circle be? Thank you very much.

Looks like this sequence ...

$ 2, 4, 7, 11, 16, 22, ... , \dfrac{n^2+n+2}{2}, ...$
 
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The maximum number of pizza pieces formula is:

$$\frac{c(c+1)}{2} +1$$

where c is the number of cuts

You'll also notice that;

the maximum number of pieces formula -1 for every number = the triangle numbers

So that's why we add a +1 at the end of the formula

Substituting c for 6 gives us:

$$\frac{42}{2}+1= 21+1=22$$

So yes, you were correct

P.S. Just so you know, you need to cross all the lines with a line to make the largest number of pieces possible, however don't cross a line intersection
 
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