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Mathematics 19 Online
OpenStudy (anonymous):

someone help me plz

OpenStudy (anonymous):

243 degrees 238 degrees 228 degrees <--- my answer 198 degrees

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

this is a rhombus, so the diagonals intersect each other at 90 degree angles

jimthompson5910 (jim_thompson5910):

using that info, what is angle b?

OpenStudy (anonymous):

will it be the same 90

jimthompson5910 (jim_thompson5910):

b is not 90

OpenStudy (anonymous):

okay let me work it out

jimthompson5910 (jim_thompson5910):

|dw:1413416912571:dw|

jimthompson5910 (jim_thompson5910):

Pull out triangle ATY |dw:1413417003128:dw|

OpenStudy (anonymous):

i got 148

jimthompson5910 (jim_thompson5910):

incorrect

jimthompson5910 (jim_thompson5910):

remember that 3 angles of a triangle add to 180 degrees

OpenStudy (anonymous):

okay so i add 90 to 180

jimthompson5910 (jim_thompson5910):

no, the three angles must add to 180

jimthompson5910 (jim_thompson5910):

|dw:1413417190431:dw|

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