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Question

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anonymous · Answer

attachment

anonymous · Answer

Okay, for this whole lesson, I was totally lost in how to do it.

sasogeek · Answer

what is the question at the top of the picture?

sasogeek · Answer

what is the question at the top of the picture?

anonymous · Answer

Does the figure have the rotational symmetry shown? If not, does the figure have any rotational symmetry/

sasogeek · Answer

this one has more than one line of symmetry so it has a rotational symmetry but what angle is it at... find out yourself

anonymous · Answer

60..?

anonymous · Answer

Oh, and verify why it doesn't if not.

sasogeek · Answer

I can't check cos i don't have a protractor with me but I do believe so :)

sasogeek · Answer

attachment

anonymous · Answer

Oh thanks! And how do you verify if it doesn't?

sasogeek · Answer

^^ is not a 45 degree rotation and here's why, if it was a 45° rotation, the angle for the second rotation would be 90° and that will be obvious :)

sasogeek · Answer

45 the first time, another 45 will make it 90, but you notice that the second rotation if you look at the lines i drew goes beyond 90, that's more of a 120° ... so definitely not 45 :)

sasogeek · Answer

do u get my point though?

anonymous · Answer

Yeah, a little bit, I'm still pretty new to this, so maybe that's why :P

sasogeek · Answer

oh i see :) cool :) how often do you use openstudy?

anonymous · Answer

very much! Math is my weakest point.

sasogeek · Answer

cool :) well you should try to answer some questions if you can, keep asking all the "why"s and "how"s ... that's just how to get it :) I hope and look forward to helping you a lot :)

anonymous · Answer

Thanks :) but are you done helping for today?

sasogeek · Answer

actually my day just started but yesterday was pretty rough so i'm not going to be doing much this morning but will be super active in the afternoon when I get over some issues :) you need more help?

anonymous · Answer

Yes, for 8 & 9 actually haha

sasogeek · Answer

I'm not sure if you can see what i've done but it should give u an idea what's going on.

sasogeek · Answer

what angle do u think that rotation went through?

anonymous · Answer

90?

sasogeek · Answer

no that cant be 90 lol did u see the arrow i drew around it?

anonymous · Answer

It says 180 doesn't it?

anonymous · Answer

I mean 90.

sasogeek · Answer

well watch this |dw:1330322354350:dw|