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Mathematics 7 Online
OpenStudy (anonymous):

...

OpenStudy (callisto):

Is there a diagram?

OpenStudy (anonymous):

http://tinypic.com/view.php?pic=211u0j&s=6 that's it

OpenStudy (callisto):

angle DBC + angle ABD = 180 degrees (adj. angles on st. line) angle DBC + 52 degrees = 180 degrees angle DBC = 180 degrees - 52 degrees = ? degrees?

OpenStudy (anonymous):

so it's 128?

OpenStudy (callisto):

128 degrees

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