Allotments 4 All
News:
Picture posting is enabled for all :)
Home
Forum
Help
Search
Calendar
Gallery
Chat
Login
Register
Allotments 4 All
»
Produce
»
Under Glass
(Moderator:
Admin aka Dan
) »
Topic:
geometry question from a thicko :(
« previous
next »
Print
Pages: [
1
]
Author
Topic: geometry question from a thicko :( (Read 4278 times)
agapanthus
Hectare
Posts: 507
geometry question from a thicko :(
«
on:
January 23, 2006, 12:25:33 »
I want to make staging for my hexangonal greenhouse (yup finally got it square!!)..all the way around and as my geometry = zip could one of you clever people tell me what the angles would be ??? Not sure if this makes sense ??? ??? ???
Logged
Paulines7
Hectare
Posts: 4,499
Re: geometry question from a thicko :(
«
Reply #1 on:
January 23, 2006, 12:50:50 »
Well done for ercting your greenhouse, it couldn't have been very straightforward. The internal angles should be 120 degrees.
«
Last Edit: January 23, 2006, 12:53:03 by Paulines7
»
Logged
Palustris
Hectare
Posts: 4,360
Re: geometry question from a thicko :(
«
Reply #2 on:
January 23, 2006, 13:24:58 »
No, no ,no internal angles are all 60 degrees.
360 degress in a circle 6 angles in a hexagon. 360/6 = 60 baboom!
Logged
Gardening is the great leveller.
Tulipa
Hectare
Posts: 2,362
Re: geometry question from a thicko :(
«
Reply #3 on:
January 23, 2006, 13:32:04 »
60 was my first answer, but in a square the angles at the corners would be 90 and in a hexagon they will be greater than a right angle so 120 degrees I think. Daughter is taking further maths a level module today - will ask her when she comes home!
Edit: Sorry Eric, you always have a greater knowledge of gardening than me. 60 degrees would make an equilateral triangle I think.
«
Last Edit: January 23, 2006, 13:35:37 by tulippa
»
Logged
Curryandchips
Hectare
Posts: 2,422
Re: geometry question from a thicko :(
«
Reply #4 on:
January 23, 2006, 13:34:31 »
That is correct Pauline.
Agapanthus, if you measure and cut a shelf with square corners so it is the correct length to sit up to each bend in your greenhouse, you can then mark and cut off a 30 degree wedge off each end, to produce shelves which will line up with each other. Please don't ask me to explain why though !
Palustris, may I gently correct you, the internal angle of a regular polygon is 180 degrees minus the angle you have cited ie 60 deg. Hence 120 degrees. I can see quite clearly why people struggle with the arithmetic.
Logged
The impossible is just a journey away ...
Ceratonia
Acre
Posts: 354
Cambridge
Re: geometry question from a thicko :(
«
Reply #5 on:
January 23, 2006, 13:40:04 »
I misinformed Palustris while on chat, so my fault, not his :-[
A quick bit of drawing shows me that if a polygon has N sides, then the formula is
Sum of the interior angles of a polygon = (N - 2) x 180°, rather than a simple 360.
So the angles of a hexagon must add up to 720, so if the hexagon has 6 equal sides, its internal angles will be 120°, as previously posted.
Logged
Curryandchips
Hectare
Posts: 2,422
Re: geometry question from a thicko :(
«
Reply #6 on:
January 23, 2006, 13:57:05 »
See if this diagram helps. This is showing the end of the shelf.
«
Last Edit: January 23, 2006, 13:58:36 by Curry
»
Logged
The impossible is just a journey away ...
kenkew
Hectare
Posts: 4,336
Don't look now but...
Re: geometry question from a thicko :(
«
Reply #7 on:
January 23, 2006, 14:02:18 »
I ran out of paper so went here.
http://mathworld.wolfram.com/Hexagon.html
Logged
Palustris
Hectare
Posts: 4,360
Re: geometry question from a thicko :(
«
Reply #8 on:
January 23, 2006, 14:15:50 »
Sorry, I take it back.
Logged
Gardening is the great leveller.
agapanthus
Hectare
Posts: 507
Re: geometry question from a thicko :(
«
Reply #9 on:
January 23, 2006, 16:08:37 »
Wish I had'nt asked now :-[...lol I did think it was 60 degrees...but then I did'nt think was right :'(......but hey ignorance is bliss!! ;D Thanks very much ;D
Logged
adam04
Hectare
Posts: 725
Who are you?
Re: geometry question from a thicko :(
«
Reply #10 on:
January 24, 2006, 16:08:35 »
Eric worked out the external angles. to find external angles its 360 / by number or vectros (corners). then you take that from 180 and thats your angle.
Logged
lorna
Hectare
Posts: 7,837
March. Cambridgeshire
Re: geometry question from a thicko :(
«
Reply #11 on:
January 24, 2006, 17:22:34 »
Well I knew the answer !!!!! I TELL LIES AS WELL ::) ::) ::)
Logged
Print
Pages: [
1
]
« previous
next »
Allotments 4 All
»
Produce
»
Under Glass
(Moderator:
Admin aka Dan
) »
Topic:
geometry question from a thicko :(
SimplePortal 2.3.5 © 2008-2012, SimplePortal