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Mathematics 8 Online
OpenStudy (anonymous):

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OpenStudy (anonymous):

Help! @jim_thompson5910

OpenStudy (anonymous):

hi again

OpenStudy (anonymous):

can i get a medal

jimthompson5910 (jim_thompson5910):

what do you have so far?

OpenStudy (anonymous):

You get medals by answering questions, please only comment about the problem itself. @jim_thompson5910 - I'm not sure how to start this one.

OpenStudy (anonymous):

well i got 360

OpenStudy (anonymous):

Once again, please support your reasoning.

jimthompson5910 (jim_thompson5910):

focus on angles a and b, if you combine them you get a full circle (ie full revolution) right?

OpenStudy (anonymous):

2 KJM + 2 KLM = 360

OpenStudy (anonymous):

@jim_thompson5910 Yes.

jimthompson5910 (jim_thompson5910):

how does angle KJM relate to arc KLM

OpenStudy (anonymous):

a = 2 x angle KJM, b = 2 x angle KLM, and a + b = 360

OpenStudy (anonymous):

Anything related to Inscribed angle Theorem?

jimthompson5910 (jim_thompson5910):

yes you are on the right path

jimthompson5910 (jim_thompson5910):

KJM is an inscribed angle

OpenStudy (anonymous):

Inscrib. angle theorem: half of the central angle is 2a degrees, thus, it would be option C, correct?

jimthompson5910 (jim_thompson5910):

close

jimthompson5910 (jim_thompson5910):

angle 'a' is actually twice as big as KJM angle 'b' is twice as big as KLM

jimthompson5910 (jim_thompson5910):

flip things around: angle KJM = (1/2)*(angle a) angle KLM = (1/2)*(angle b)

OpenStudy (anonymous):

isn't that what I said :( |dw:1420420087906:dw|

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