A regular hexagon and a regular octagon are joined work out angle x

Watch
This discussion is closed.
Dumbbishh95
Badges: 4
Rep:
?
#1
Report Thread starter 3 years ago
#1
Name:  maths.PNG
Views: 666
Size:  55.0 KB help
6
Vikingninja
Badges: 21
Rep:
?
#2
Report 3 years ago
#2
Use exterior angles (each shape adds up to 360) to find interior angles, add those together and take away from 360.
0
an_atheist
Badges: 15
Rep:
?
#3
Report 3 years ago
#3
(Original post by Vikingninja)
Use exterior angles (each shape adds up to 360) to find interior angles, add those together and take away from 360.
Dont even need to do that. angle x is just the two exterior angles added together.
2
ThatsAGoodOne349
Badges: 21
Rep:
?
#4
Report 3 years ago
#4
(Original post by Dumbbishh95)
Name:  maths.PNG
Views: 666
Size:  55.0 KB help
Have you done any work to try and answer?


(Original post by an_atheist)
Dont even need to do that. angle x is just the two exterior angles added together.
if you do that you get 255 deg.
I'm sure that ain't right..
1
GrabDrop
Badges: 7
Rep:
?
#5
Report 3 years ago
#5
(Original post by ThatsAGoodOne349)
Have you done any work to try and answer?



if you do that you get 255 deg.
I'm sure that ain't right..
255 deg is the two interior angles added together. Exterior angles are the angles that each side turns from the the side before it.
1
ThatsAGoodOne349
Badges: 21
Rep:
?
#6
Report 3 years ago
#6
(Original post by GrabDrop)
255 deg is the two interior angles added together. Exterior angles are the angles that each side turns from the the side before it.
thats why i said it aint right... - I mean it is sort of right just said incorrectly.
they said exterior not interior...
(im trying to avoid cards here...)
that x angle is an exterior angle to the shapes, and you have interiors...
0
m-k1
Badges: 17
Rep:
?
#7
Report 3 years ago
#7
(Original post by Dumbbishh95)
Name:  maths.PNG
Views: 666
Size:  55.0 KB help
x = 105
4
m-k1
Badges: 17
Rep:
?
#8
Report 3 years ago
#8
(Original post by m-k1)
x = 105
Because 360 (angles in a circle) - interior angle of hexagon (120) - interior angle of octagon (135) = 105
1
GrabDrop
Badges: 7
Rep:
?
#9
Report 3 years ago
#9
(Original post by ThatsAGoodOne349)
thats why i said it aint right... - I mean it is sort of right just said incorrectly.
they said exterior not interior...
(im trying to avoid cards here...)
that x angle is an exterior angle to the shapes, and you have interiors...
I don't understand what you just said. You just work out the exterior of each shape and add them up.
0
Chicken.M.
Badges: 20
Rep:
?
#10
Report 3 years ago
#10
Finally a question easy enough that I can answer. I took maths and physics at Alevel but forgotten it all lol.

Theres a bunch of different ways to work out it. This is the easiest I can see.

inner angle of hexagon:

720 / 6 = 120

inner angle octagon:

1080 / 8 = 135


angle of x:

360 - (135 + 120) = 105

x = 105


In case you don't understand. all the angles around a point add up to 360. So you take off the other 2 angles from 360.

Working out the inner angles from regular shapes is easy you can just google it.


(Original post by ThatsAGoodOne349)
t
thats where 255 comes from. He missed the last step lol.
1
ThatsAGoodOne349
Badges: 21
Rep:
?
#11
Report 3 years ago
#11
(Original post by GrabDrop)
I don't understand what you just said. You just work out the exterior of each shape and add them up.
x isn't gonna be 255...
(Original post by ChickenMadness)
Finally a question easy enough that I can answer. I took maths and physics at Alevel but forgotten it all lol.

Theres a bunch of different ways to work out it. This is the easiest I can see.

inner angle of hexagon:

720 / 6 = 120

inner angle octagon:

1080 / 8 = 135


angle of x:

360 - (135 + 120) = 105

x = 105


In case you don't understand. all the angles around a point add up to 360. So you take off the other 2 angles from 360.

Working out the inner angles from regular shapes is easy you can just google it.


thats where 255 comes from. He missed the last step lol.
it was purpose..
it's called full work otherwise..
0
GrabDrop
Badges: 7
Rep:
?
#12
Report 3 years ago
#12
(Original post by ThatsAGoodOne349)
x isn't gonna be 255...
Yeah and 255 isn't the sum of the two exterior angles ,105 is
0
ThatsAGoodOne349
Badges: 21
Rep:
?
#13
Report 3 years ago
#13
(Original post by GrabDrop)
Yeah and 255 isn't the sum of the two exterior angles ,105 is
I realised once someone said 255 lol
0
Notnek
  • Study Helper
Badges: 20
Rep:
?
#14
Report 3 years ago
#14
Hi everyone, please don't post full solutions in the maths forum. The guidelines are given here.
0
zaynab.nx
Badges: 2
Rep:
?
#15
Report 2 years ago
#15
You do 360÷6 because the hexagon adds upto 360 and it has 6 sides
360÷6=60

You do 360÷8 because an octagon adds upto 360 and it has 8 sides
360÷8=45

60+45=105
X=105
0
dasy12345678
Badges: 3
Rep:
?
#16
Report 1 year ago
#16
thank you relly helped me
1
kt_xoxo_xoxo
Badges: 1
Rep:
?
#17
Report 1 year ago
#17
yes do that but then do 360 degrees minus your 255 degrees which equals 105 degrees which is equal to x. This was one of the questions on my maths homework and I got it right. so yeah... your welcome g
0
danish dani
Badges: 3
Rep:
?
#18
Report 1 year ago
#18
(Original post by Dumbbishh95)
Name:  maths.PNG
Views: 666
Size:  55.0 KB help
i dont answer
0
X
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Do you feel comfortable going back to school on March 8th?

Yes (300)
31.88%
No (641)
68.12%

Watched Threads

View All