Brainteaser

mysterious_w · 11th August 2004, 09:03

I saw this on a cheap cable channel last night. I know the answer to it, but I can't figure out why it is that. Anyway, you've got 24 hours to guess how many isoceles triangles can be made by joining the pegs.

will · 11th August 2004, 09:25

I can see 33.

Russ · 11th August 2004, 10:32

Well it really depends whether the bottom row, second from right peg is meant to be out of kilter, or whether it's just a shoddy diagram.

If it's not meant to be like that, I can also see 33, at a rough count. I suspect I may have counted some twice though.

xzxzzx · 11th August 2004, 17:27

I can see 35, but I think I counted two of them twice.

zootm · 11th August 2004, 17:37

None.

MonKeyRum · 11th August 2004, 17:46

Hint: isosceles triangle - Two sides are equal in length, and two angles are equal to each other

Russ · 11th August 2004, 17:56

Quote:

Originally posted by MonKeyRum
Hint: isosceles triangle - Two sides are equal in length, and two angles are equal to each other

I think we're all aware of that (except possibly zootm if he wasn't being facetious).

If you want to be a smartass, there are none because the pegs are not an equal distance apart. If that's the answer, then it's not really a brainteaser more than a question about who's the most pedantic.

I can count at least one isosceles triangle there, i.e. the one marked, assuming that the distance between any two adjecent pegs is intended to be equal.

CaboWaboAddict · 11th August 2004, 18:09

I see one. Mas tequila!

indicavia · 11th August 2004, 18:32

Quote:

Originally posted by Russ
I think we're all aware of that (except possibly zootm if he wasn't being facetious).

If you want to be a smartass, there are none because the pegs are not an equal distance apart. If that's the answer, then it's not really a brainteaser more than a question about who's the most pedantic.

I can count at least one isosceles triangle there, i.e. the one marked, assuming that the distance between any two adjecent pegs is intended to be equal.

think about it for a second, Russ. Is this forum only used by people living in the USA..?
I might be the only one here, but I didn't know what an isoceles triangle was. I guesed it was what he said, but I couldn't be sure untill MonKeyRum said it.
Maybe he just wanted to be nice..?

Russ · 11th August 2004, 18:46

OK, maybe I got the wrong end of the stick there

.

indicavia · 11th August 2004, 18:49

good, then we're all happy again..

eleet-2k2 · 11th August 2004, 19:54

I count about 34.

Raz · 11th August 2004, 20:18

42

Where does the odd number come from will?

will · 11th August 2004, 20:26

Quote:

Originally posted by Raz
42

Where does the odd number come from will?

hm. Thats a good point, I hadn't considered that. I just started counting.

MonKeyRum · 11th August 2004, 20:28

I posted the hint for the geometrically challenged as a refresher

shakey_snake · 11th August 2004, 20:28

Quote:

Originally posted by indicavia
think about it for a second, Russ. Is this forum only used by people living in the USA..?
I might be the only one here, but I didn't know what an isoceles triangle was. I guesed it was what he said, but I couldn't be sure untill MonKeyRum said it.
Maybe he just wanted to be nice..?

What does the US have to do with you not knowing basic geometry? Do all other counties not have schools?

Or is this all a really, really dry satire?

CaboWaboAddict · 12th August 2004, 03:09

Sober now... bummer. I see 42 also.

Ok, where's my Cabo?

Coman · 12th August 2004, 03:17

it has to do with the fact that people from other countries might not know what does "isoceles triangle" mean.

shakey_snake · 12th August 2004, 04:32

what, is their a metric name for it or some crap?

...oh... non-native english speakers..right.
but isn't the word "isoceles" greek?

Wolfgang · 12th August 2004, 08:35

That IS its name. It's a basic part of 12-year old Maths, just like Pythagoras' theorem. Everyone who had some sort of an education really should know it.

I count 42.

mysterious_w · 12th August 2004, 09:14

None of you are right, but Raz, Cabo and Wolfgang came closest. The right answer is 50, but I can only see 36.

Widdykats · 12th August 2004, 11:40

Can you show the answer, please?

Germ · 12th August 2004, 13:22

The question asker can't even get the right answer. Right..

Widdykats · 12th August 2004, 14:01

Where are the 50? Can you show the answer?

SSJ4 Gogitta · 12th August 2004, 14:48

I can only find 46 right now..

cyu · 12th August 2004, 15:05

Do we get a prize for getting it right?

SSJ4 Gogitta · 12th August 2004, 15:10

I take that back, found all 50

SSJ4 Gogitta · 12th August 2004, 15:24

Or maybe not, last two are off by like, 12 pixels.. Still found 48.

indicavia · 12th August 2004, 15:42

Quote:

Originally posted by Wolfgang
That IS its name. It's a basic part of 12-year old Maths, just like Pythagoras' theorem. Everyone who had some sort of an education really should know it.

I count 42.

I've heard about Pythagoras, but I've never heard about "isoceles".
I do have basic education, but in my country we call it "likesidet trekant".. "trekant" means "triangle" and "likesidet" means that all the sides have the same length (sp?)
so, yeah, sorry about that..

Germ · 12th August 2004, 15:43

Fucking stupid Americans

SSJ4 Gogitta · 12th August 2004, 16:14

Scalene triangle: All sides are of unequal length.
Equilataral triangle: All sides are of equal length.
Isosceles triangle: Only two sides are of equal length.
Right triangle: A triangle having a right angle.
Quadrantal triangle: A spherical triangle with one side equal to a quadrant.
Spherical triangle: A sphereical polygon of three sides.

OutlawJim · 12th August 2004, 16:35

i could only see 42

beanboy89 · 12th August 2004, 16:44

I found 30, but I proabaly missed alot.

SSJ4 Gogitta · 12th August 2004, 16:46

Quote:

Originally posted by beanboy89
I found 30, but I proabaly missed alot.

...about 20..

These are the ones I found, though the ones in the bottom right are wrong, the two longest lines, one is shorter by about 12 pixels.

Note that each triangle has it's own color. So ones that have two of the same color, they're part of one triangle, just overlapping with another.

beanboy89 · 12th August 2004, 16:50

Crap, I missed alot of those. I'm stupid.

Widdykats · 12th August 2004, 17:00

Quote:

Originally posted by SSJ4 Gogitta
...about 20..

These are the ones I found, though the ones in the bottom right are wrong, the two longest lines, one is shorter by about 12 pixels.

Note that each triangle has it's own color. So ones that have two of the same color, they're part of one triangle, just overlapping with another.

WOW! Cool! Thank mew!

shakey_snake · 12th August 2004, 21:44

Quote:

Originally posted by indicavia
"likesidet" means that all the sides have the same length (sp?)

that would be an Equilataral triangle: All sides are of equal length.

SSJ4 Gogitta · 12th August 2004, 21:45

I already posted that...

ujay · 12th August 2004, 22:32

46

UJ

Widdykats · 12th August 2004, 23:37

Are you right UJ?

11th August 2004, 09:03	#1
mysterious_w Forum King Join Date: Dec 2003 Location: Good ol' Britain Posts: 2,750	Brainteaser I saw this on a cheap cable channel last night. I know the answer to it, but I can't figure out why it is that. Anyway, you've got 24 hours to guess how many isoceles triangles can be made by joining the pegs.

11th August 2004, 09:25	#2
will Nullsoft Newbie (Moderator) Join Date: Mar 2001 Location: Sheffield, England Posts: 5,569	I can see 33. DO NOT PM ME WITH TECH SUPPORT QUESTIONS

11th August 2004, 10:32	#3
Russ Mostly Harmless (Alumni) Join Date: Jan 2001 Location: UK Posts: 2,319	Well it really depends whether the bottom row, second from right peg is meant to be out of kilter, or whether it's just a shoddy diagram. If it's not meant to be like that, I can also see 33, at a rough count. I suspect I may have counted some twice though. For long you live and high you fly, but only if you ride the tide, and balanced on the biggest wave you race towards an early grave. \|Musicbrainz\|Audioscrobbler\|last.fm\|

11th August 2004, 17:27	#4
xzxzzx Forum King Join Date: Aug 2002 Posts: 7,254	I can see 35, but I think I counted two of them twice. Freedom of speech is the basic freedom of humanity. When you've lost that, you've lost everything. 1\/\/4y 34\|<$p4y 1gp4y 33714y, 0d4y 0uy4y? \| Roses are #FF0000; Violets are #0000FF; chown -R ${YOU} ~/base The DMCA. It really is that bad. : Count for your life.

11th August 2004, 17:46	#6
MonKeyRum Major Dude Join Date: May 2004 Location: The North Posts: 859	Hint: isosceles triangle - Two sides are equal in length, and two angles are equal to each other Suburbia: The place where they clear down trees and then name roads after them

11th August 2004, 17:37	#5
zootm Forum King Join Date: Jan 2002 Location: the nether reaches of bonnie scotland Posts: 13,375	None.

11th August 2004, 18:09	#8
CaboWaboAddict Forum Sot (Major Dude) Join Date: Mar 2004 Location: Marietta, Ga. U.S.A. Posts: 3,916	I see one. Mas tequila! Idiot's Advocate My site (under construction)

11th August 2004, 18:46	#10
Russ Mostly Harmless (Alumni) Join Date: Jan 2001 Location: UK Posts: 2,319	OK, maybe I got the wrong end of the stick there . For long you live and high you fly, but only if you ride the tide, and balanced on the biggest wave you race towards an early grave. \|Musicbrainz\|Audioscrobbler\|last.fm\|

11th August 2004, 18:49	#11
indicavia Senior Member Join Date: Apr 2001 Posts: 412	good, then we're all happy again.. Say NO to software patents! my norwegian blog

11th August 2004, 19:54	#12
eleet-2k2 Forum King Join Date: Aug 2001 Location: Mobil Ave. Posts: 5,381	I count about 34. "Welcome to the Island of people who know too much."..."Did you really think balloons would stop him?!" See what I'm listening too.

11th August 2004, 20:18	#13
Raz Forum King Join Date: Dec 2002 Location: Manchester Posts: 6,470	42 Where does the odd number come from will?

11th August 2004, 20:28	#15
MonKeyRum Major Dude Join Date: May 2004 Location: The North Posts: 859	I posted the hint for the geometrically challenged as a refresher Suburbia: The place where they clear down trees and then name roads after them

12th August 2004, 03:09	#17
CaboWaboAddict Forum Sot (Major Dude) Join Date: Mar 2004 Location: Marietta, Ga. U.S.A. Posts: 3,916	Sober now... bummer. I see 42 also. Ok, where's my Cabo? Idiot's Advocate My site (under construction)

12th August 2004, 03:17	#18
Coman Punk (Forum King) Join Date: Apr 2003 Location: 4.5th dimension . . Posts: infinitely few Posts: 2,799	it has to do with the fact that people from other countries might not know what does "isoceles triangle" mean. "Most of my male friends get their hair trimmed, including the hair around their temples, even though this is expressly forbidden by Lev. 19:27. How should they die?"

12th August 2004, 04:32	#19
shakey_snake Forum Domo Join Date: Jan 2004 Location: Everyone, get over here for the picture! Posts: 4,313	what, is their a metric name for it or some crap? ...oh... non-native english speakers..right. but isn't the word "isoceles" greek? elevatorladyelevatorladyelevatorladyelevatorladyelevatorladylevitateme

12th August 2004, 08:35	#20
Wolfgang Forum King Join Date: Mar 2004 Posts: 3,069	That IS its name. It's a basic part of 12-year old Maths, just like Pythagoras' theorem. Everyone who had some sort of an education really should know it. I count 42.

12th August 2004, 09:14	#21
mysterious_w Forum King Join Date: Dec 2003 Location: Good ol' Britain Posts: 2,750	None of you are right, but Raz, Cabo and Wolfgang came closest. The right answer is 50, but I can only see 36.

12th August 2004, 11:40	#22
Widdykats The Forum Slut Join Date: Jun 2002 Location: A place that invites a post pumping whore from NY Posts: 15,787	Can you show the answer, please?

12th August 2004, 13:22	#23
Germ rules all things Join Date: Jan 2001 Posts: 3,149	The question asker can't even get the right answer. Right..

12th August 2004, 14:01	#24
Widdykats The Forum Slut Join Date: Jun 2002 Location: A place that invites a post pumping whore from NY Posts: 15,787	Where are the 50? Can you show the answer?

12th August 2004, 14:48	#25
SSJ4 Gogitta Followed by Gnomes (Forum King) Join Date: Dec 2000 Location: West Virginia Googolplex: 10^10¹°° FB:/SSJ4.DominusDeus DeviantArt: DominusDeus XboX GT: A Wild Meeseeks Playstation 4: DominusDeus Posts: 7,162	I can only find 46 right now..

12th August 2004, 15:05	#26
cyu Major Dude Join Date: Apr 2002 Location: in front of my pc Posts: 1,617	Do we get a prize for getting it right?

12th August 2004, 15:10	#27
SSJ4 Gogitta Followed by Gnomes (Forum King) Join Date: Dec 2000 Location: West Virginia Googolplex: 10^10¹°° FB:/SSJ4.DominusDeus DeviantArt: DominusDeus XboX GT: A Wild Meeseeks Playstation 4: DominusDeus Posts: 7,162	I take that back, found all 50

12th August 2004, 15:24	#28
SSJ4 Gogitta Followed by Gnomes (Forum King) Join Date: Dec 2000 Location: West Virginia Googolplex: 10^10¹°° FB:/SSJ4.DominusDeus DeviantArt: DominusDeus XboX GT: A Wild Meeseeks Playstation 4: DominusDeus Posts: 7,162	Or maybe not, last two are off by like, 12 pixels.. Still found 48.

12th August 2004, 15:43	#30
Germ rules all things Join Date: Jan 2001 Posts: 3,149	Fucking stupid Americans

12th August 2004, 16:14	#31
SSJ4 Gogitta Followed by Gnomes (Forum King) Join Date: Dec 2000 Location: West Virginia Googolplex: 10^10¹°° FB:/SSJ4.DominusDeus DeviantArt: DominusDeus XboX GT: A Wild Meeseeks Playstation 4: DominusDeus Posts: 7,162	Scalene triangle: All sides are of unequal length. Equilataral triangle: All sides are of equal length. Isosceles triangle: Only two sides are of equal length. Right triangle: A triangle having a right angle. Quadrantal triangle: A spherical triangle with one side equal to a quadrant. Spherical triangle: A sphereical polygon of three sides.

12th August 2004, 16:35	#32
OutlawJim Confused (Major Dude) Join Date: Feb 2003 Location: Northern Ireland Posts: 1,017	i could only see 42 Nobby:I have ADD.... Germ:No shit, Nobby? Nobody would have ever guessed.

12th August 2004, 16:44	#33
beanboy89 (Major Dude) isn't very custom Join Date: Nov 2003 Location: Pennsylvania, USA Posts: 2,004	I found 30, but I proabaly missed alot. Site \| Help us count

12th August 2004, 16:50	#35
beanboy89 (Major Dude) isn't very custom Join Date: Nov 2003 Location: Pennsylvania, USA Posts: 2,004	Crap, I missed alot of those. I'm stupid. Site \| Help us count

12th August 2004, 21:45	#38
SSJ4 Gogitta Followed by Gnomes (Forum King) Join Date: Dec 2000 Location: West Virginia Googolplex: 10^10¹°° FB:/SSJ4.DominusDeus DeviantArt: DominusDeus XboX GT: A Wild Meeseeks Playstation 4: DominusDeus Posts: 7,162	I already posted that...

12th August 2004, 22:32	#39
ujay Forum King Join Date: Jul 2001 Location: London Posts: 6,072	46 UJ

12th August 2004, 23:37	#40
Widdykats The Forum Slut Join Date: Jun 2002 Location: A place that invites a post pumping whore from NY Posts: 15,787	Are you right UJ?

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode