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Mathematics 16 Online
OpenStudy (anonymous):

If ∠8 measures 124°, what is the sum of the measures of ∠6 and ∠7?

OpenStudy (raden):

diagram ?

OpenStudy (anonymous):

OpenStudy (anonymous):

i have no idea what the answer is but the answer choices are 304 , 124 , 112 & 132

OpenStudy (raden):

first, ∠6 = ∠7 (vertical angles) and ∠8 + ∠7 = 180 (supplement angles) 128 + ∠7 = 180 solve for m∠7 ?

OpenStudy (raden):

* 124

OpenStudy (anonymous):

ohmygod thank you !

OpenStudy (raden):

i didnt say the answer is 124 :) i meant, that's typo. it should 124 + ∠7 = 180, not 128 + ∠7 = 180 now can you find m∠7 ?

OpenStudy (anonymous):

okayyy so the answer 304 got it

OpenStudy (raden):

hmmm... nope, that's wrong 124 + ∠7 = 180 subtaract by 124 on both sides to get ∠7 = 56

OpenStudy (raden):

now ∠7 = ∠6 = 56 so, the sum of both angles ∠6 + ∠7 = 56 + 56 = ... ?

OpenStudy (anonymous):

112

OpenStudy (raden):

correct!

OpenStudy (anonymous):

thanks !

OpenStudy (raden):

yw

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