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  3. [Mathematics] Sum of angles of triangle [Updated]

[Mathematics] Sum of angles of triangle [Updated]

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  • L Luc Pattyn

    use more space, and more atoms or Lego blocks to create a larger figure, resulting in higher precision. if you concentrate on molecular particles, you won't be able to draw a line at all; everything is just gaps with some rare particles in between, Higgs or other. :)

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    soap brain
    wrote on last edited by
    #23

    I was just pointing out to him that the only time Sqrt[3] is not constructible - in reality - is when no other desired length is either.

    Luc Pattyn wrote:

    Higgs or other.

    Almost entirely Higgs bosons and gravitons, I would wager. ;P

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    • D dan sh

      See, here the triangle is not in two dimensions so whatever the calculations are do not hold true for a two dimensional triangle. Am I right or I need to read more?

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      Luc Pattyn
      wrote on last edited by
      #24

      It is all relative. The surface of a sphere is a two-dimensional object: you can draw lines on it, delimiting an area, etc. You could always read more about it, however you would never see the end of it. :)

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      • L Luc Pattyn

        It is all relative. The surface of a sphere is a two-dimensional object: you can draw lines on it, delimiting an area, etc. You could always read more about it, however you would never see the end of it. :)

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        TheGreatAndPowerfulOz
        wrote on last edited by
        #25

        Luc Pattyn wrote:

        surface of a sphere is a two-dimensional object

        don't think that's true since it moves through length, width AND height.

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        • S soap brain

          I was just pointing out to him that the only time Sqrt[3] is not constructible - in reality - is when no other desired length is either.

          Luc Pattyn wrote:

          Higgs or other.

          Almost entirely Higgs bosons and gravitons, I would wager. ;P

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          TheGreatAndPowerfulOz
          wrote on last edited by
          #26

          and "dark" matter/energy, i.e stuff we don't know or haven't imagined yet.

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          • D dan sh

            My point is, that vertical line which I would draw as a median to the side of equilateral triangle, has to be of length 3^1/2. Now, since that cannot be drawn, everything goes void. Isn't it?

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            Luc Pattyn
            wrote on last edited by
            #27

            d@nish wrote:

            that cannot be drawn

            Can you draw a straight line of length 1 meter? If you accept your pencil/pen/whatever has a certain width and you are satisfied that lengths and widths should not be more accurate than said width, then you can draw it perfectly. Same for circles, and hence also for SQRT(3) and many more irrational numbers. :)

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            • T TheGreatAndPowerfulOz

              and "dark" matter/energy, i.e stuff we don't know or haven't imagined yet.

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              Luc Pattyn
              wrote on last edited by
              #28

              dark matter is just some more Higgs, painted black to fool us all. :)

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              • L Luc Pattyn

                It is all relative. The surface of a sphere is a two-dimensional object: you can draw lines on it, delimiting an area, etc. You could always read more about it, however you would never see the end of it. :)

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                dan sh
                wrote on last edited by
                #29

                Surface of sphere "can be" considered 2-d if we are considering a part of its surface where sphere is of astronomical radius or we consider extremely small part of the surface. Otherwise I guess it has to be 3-d.

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                • L Luc Pattyn

                  d@nish wrote:

                  that cannot be drawn

                  Can you draw a straight line of length 1 meter? If you accept your pencil/pen/whatever has a certain width and you are satisfied that lengths and widths should not be more accurate than said width, then you can draw it perfectly. Same for circles, and hence also for SQRT(3) and many more irrational numbers. :)

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                  dan sh
                  wrote on last edited by
                  #30

                  Luc Pattyn wrote:

                  Can you draw a straight line of length 1 meter?

                  Depends on the accuracy rate we agree upon. :)

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                  • T TheGreatAndPowerfulOz

                    Luc Pattyn wrote:

                    surface of a sphere is a two-dimensional object

                    don't think that's true since it moves through length, width AND height.

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                    Luc Pattyn
                    wrote on last edited by
                    #31

                    in your Cartesian mind, yes. If you were the captain of a ship on one of earth's oceans, you would see longitude and latitude (hence two dimensions), and no third one, at least as long as you stay afloat. :)

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                    • T TheGreatAndPowerfulOz

                      no, it just means you can't accurately measure the sqrt(3) side.

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                      dan sh
                      wrote on last edited by
                      #32

                      ahmed zahmed wrote:

                      no, it just means you can't accurately measure draw the sqrt(3) side.

                      FTFY, IMO. :)

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                      • D dan sh

                        Luc Pattyn wrote:

                        Can you draw a straight line of length 1 meter?

                        Depends on the accuracy rate we agree upon. :)

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                        Luc Pattyn
                        wrote on last edited by
                        #33

                        OK, you choose the accuracy, we verify I can do 1 meter; next I will do SQRT(3) meter with the same accuracy, as outlined earlier. :)

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                        • L Luc Pattyn

                          No. You not being able to do something does not prove or disprove something else. :)

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                          dan sh
                          wrote on last edited by
                          #34

                          I see it more like this: if X states Y is possible and I know Y is not possible, X has to be wrong.

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                          • L Luc Pattyn

                            OK, you choose the accuracy, we verify I can do 1 meter; next I will do SQRT(3) meter with the same accuracy, as outlined earlier. :)

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                            dan sh
                            wrote on last edited by
                            #35

                            If we go for 100% accuracy, latter is not possible. If we go for anything less than that, latter wont be correct.

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                            • T TheGreatAndPowerfulOz

                              Well since the square-root of 3 is a non-finite number, no you couldn't draw the line. Hence the figure drawn would not be a triangle at all since the two lines would never meet and the figure would not be closed. Ergo, the "point" were one side "doesn't meet" with the 3^1/2 side has no angle.

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                              AspDotNetDev
                              wrote on last edited by
                              #36

                              ahmed zahmed wrote:

                              the square-root of 3 is a non-finite number

                              It is finite. I think the word you are looking for is "irrational". Another irrational number is 3.14159...

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                              • L Luc Pattyn

                                in your Cartesian mind, yes. If you were the captain of a ship on one of earth's oceans, you would see longitude and latitude (hence two dimensions), and no third one, at least as long as you stay afloat. :)

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                                TheGreatAndPowerfulOz
                                wrote on last edited by
                                #37

                                actually you do see a third one: the horizon is curved. (and not because there are waves)

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                                • A AspDotNetDev

                                  ahmed zahmed wrote:

                                  the square-root of 3 is a non-finite number

                                  It is finite. I think the word you are looking for is "irrational". Another irrational number is 3.14159...

                                  [Forum Guidelines]

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                                  TheGreatAndPowerfulOz
                                  wrote on last edited by
                                  #38

                                  no, I said the correct word: non-finite (or infinite). The number of digits is not countable, ergo it is infinitely long and yes, not rational, i.e., not complete comprehensible.

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                                  • D dan sh

                                    I see it more like this: if X states Y is possible and I know Y is not possible, X has to be wrong.

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                                    Luc Pattyn
                                    wrote on last edited by
                                    #39

                                    well, I can draw a line of length 1 or of length SQRT(3) equally well as you can not prove I can't draw them. :)

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                                    • D dan sh

                                      If we go for 100% accuracy, latter is not possible. If we go for anything less than that, latter wont be correct.

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                                      Luc Pattyn
                                      wrote on last edited by
                                      #40

                                      if you want 100% accuracy, then stick to math, and don't draw anything. :)

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                                      • L Luc Pattyn

                                        if you want 100% accuracy, then stick to math, and don't draw anything. :)

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                                        dan sh
                                        wrote on last edited by
                                        #41

                                        That's what I am saying with 100% accuracy, one cannot draw the 30,60,90 triangle. Never mind. I am off to sleep now. Good day. :)

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                                        • D dan sh

                                          That's what I am saying with 100% accuracy, one cannot draw the 30,60,90 triangle. Never mind. I am off to sleep now. Good day. :)

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                                          Luc Pattyn
                                          wrote on last edited by
                                          #42

                                          Nor can you draw a 1 kilometer straight line with 1 micron accuracy. Good night to you. :)

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