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Mathematics 20 Online
OpenStudy (cydney_morgan):

Can some one help me with this question so I can do the rest on my own? ( Screen Shot Attached ) I'm really sorry, I have no clue what I'm doing.

OpenStudy (cydney_morgan):

OpenStudy (anonymous):

131 degrees

OpenStudy (anonymous):

supplementary angles sum up to 180 so required angle measures 180-49 =131

OpenStudy (cydney_morgan):

Can you explain a little bit more in depth? If thats possible? >.< @notamathmajor @matricked

jimthompson5910 (jim_thompson5910):

|dw:1399267601674:dw|

jimthompson5910 (jim_thompson5910):

angle ECA and angle ECD are supplementary, so they add to 180 degrees and form a straight angle (ie a straight line) the drawing visually confirms this

jimthompson5910 (jim_thompson5910):

|dw:1399267683095:dw|

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