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Mathematics 21 Online
OpenStudy (anonymous):

Given the diagram below, what must C measure in order for DBC to be isosceles? (PICTURE BELOW.)

OpenStudy (anonymous):

OpenStudy (anonymous):

Actually angle dbc is 110 degrees by 180 degrees - 70 degrees. Then given our triangle has to be 180 with two equal sides (isosceles) we can use the equations 110 + 2x = 180. By subtracting we get 70 = 2x or x = 35 degrees.

OpenStudy (anonymous):

Thank youuu!

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