hk213 Posted December 9, 2008 Report Share Posted December 9, 2008 ok bascially this has an equilateral triangle ABC and is drawn and each segment divides the sidin the raio of 1:2 creating another equilateral triangl inside the big triangle..Has anyone done this portfolio?????Plz give suggestions on how to approach this... Link to post Share on other sites More sharing options...
kikoko Posted December 11, 2008 Report Share Posted December 11, 2008 doin´ it now... got points 1 and 2 done.. missin 3 and 4.... Link to post Share on other sites More sharing options...
hk213 Posted December 12, 2008 Author Report Share Posted December 12, 2008 doin´ it now... got points 1 and 2 done.. missin 3 and 4....how did you do the proving part>???? Link to post Share on other sites More sharing options...
Darko Posted May 13, 2009 Report Share Posted May 13, 2009 Hi, I have been given the assignment of finding out different relationships of segments in triangles and squares. I was just wondering if anyone else has been given this title to work on? How are you coping?Thanks in advance. Link to post Share on other sites More sharing options...
GNRS Posted May 13, 2009 Report Share Posted May 13, 2009 I did it. It was kind of easy, using trigonometry and similarities. The most "difficult" question is the second one, because you have to use other methods (actually, the method used for this question is also working for the first one, but it's difficult to find it). The last question is not very difficult if you have done the other questions. 1 Link to post Share on other sites More sharing options...
gycgycgyc Posted May 19, 2009 Report Share Posted May 19, 2009 ... is it neccessary to provide a general formual for polygens' segment and area ratio including the number of sides and the value of n. Link to post Share on other sites More sharing options...
FlyByNight Posted February 23, 2010 Report Share Posted February 23, 2010 I was assigned the HL Type I portfolio Segments of a Polygon. I have started it, but I cannot figure it out at all. I have created triangles with four or five different side ratios (step 1b). But now I am asked to "conjecture a relationship between the ratios of the sides and the ratio of the areas of the triangles." My question is when they say "ratios of the sides," do they mean the 1:n ratio I used to create the smaller equilateral triangle, or do they mean the ratio between the sides of the large triangle (ABC) and the sides of the smaller triangle (DEF)? If it is the latter, it appears to be obvious because they are similar triangles. If it is the former, I have no idea and I would like any help that can be given.Thanks in advancePeter Link to post Share on other sites More sharing options...
gleipnir Posted April 21, 2010 Report Share Posted April 21, 2010 My question is when they say "ratios of the sides," do they mean the 1:n ratio I used to create the smaller equilateral triangle, or do they mean the ratio between the sides of the large triangle (ABC) and the sides of the smaller triangle (DEF)? If it is the latter, it appears to be obvious because they are similar triangles. If it is the former, I have no idea and I would like any help that can be given.Thanks in advancePeterYes, my thoughts exactly! I asked my teacher about this and he couldn't even give me a good answer. He just said play around with everything and whatever seems to make more sense, go for that one. I echo FlyByNight's sentiments completely as it does seem too easy if it is the former, and I would really be expecting more from a HL portfolio question.Please, would anyone like to enlighten us on this? Link to post Share on other sites More sharing options...
dessskris Posted September 11, 2010 Report Share Posted September 11, 2010 hey Im doing this too for my holiday homework. its not gonna be formally assessed by the IB ppl, but my tcher is gonna mark it. I got the conjecture and proved it already, but my teacher said I need to find the formula for the length of the side of the inner triangle to prove it once more time because at first I used approximation for the values of the ratios. can anybody help me to find the formula for the length of the side of the inner triangle? I have found a formula using sine but that aint accurate enough Link to post Share on other sites More sharing options...
dessskris Posted September 11, 2010 Report Share Posted September 11, 2010 hey Im doing this too for my holiday homework. its not gonna be formally assessed by the IB ppl, but my tcher is gonna mark it. I got the conjecture and proved it already, but my teacher said I need to find the formula for the length of the side of the inner triangle to prove it once more time because at first I used approximation for the values of the ratios. can anybody help me to find the formula for the length of the side of the inner triangle? I have found a formula using sine but that aint accurate enough Link to post Share on other sites More sharing options...
Mahuta ♥ Posted October 7, 2010 Report Share Posted October 7, 2010 Automatic generated messageThis topic has been closed by a moderator.Reason: 2 YEARS OLDIf you disagree with this action, please report this post, and a moderator or administrator will review it.Kind regards,IB Survival Staff Link to post Share on other sites More sharing options...
Mahuta ♥ Posted October 7, 2010 Report Share Posted October 7, 2010 Automatic generated messageThis topic has been closed by a moderator.Reason: MAY 2009 assignment..OLDIf you disagree with this action, please report this post, and a moderator or administrator will review it.Kind regards,IB Survival Staff Link to post Share on other sites More sharing options...
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