Really quick question (1 Viewer)

[kurt.physics]

Hi,

I had a test in which there was this question that had a octagon and a line extended from one of the sides (external angle). The question asked to find this external angle.

But there was no indication that the octagon was regular; it was not mentioned and no lines indicating equal sides were on the diagram.

Is this possible, can you find this particular exterior angle without it being regular???

:note: in the test I assumed it was regular and just figured it out from there:: Was i right to do so?)

 

[hermand]

yeah. just assume it's regular. because there's no other way to do it [if there was no other information at all] as the diagrams are never to scale unless you were told that.

 

[kurt.physics]

yeah. just assume it's regular. because there's no other way to do it [if there was no other information at all] as the diagrams are never to scale unless you were told that.

yeh, thats what i thought. But i felt like i was committing a mathematical crime in the 3rd degree when i was writing the proof =)

 

[hermand]

yeh, thats what i thought. But i felt like i was committing a mathematical crime in the 3rd degree when i was writing the proof =)

haha yes i totally understand =]].

and if you got it wrong you'd have a really strong argument for getting the marks anyway.

 

[kurt.physics]

So am i right to say the answer is 45

 

[hermand]

So am i right to say the answer is 45

sure are =]].

 

[lolokay]

well yeah. if it's impossible to solve the question otherwise, just assume it's regular