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OpenStudy (anonymous):
What is the measure of angle BCD? 35 55 90 125
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OpenStudy (anonymous):
OpenStudy (anonymous):
The measure of an exterior angle is the same as the sum of the remote interior angles (35+90) [in a plane].
OpenStudy (anonymous):
180-(90-35)
OpenStudy (anonymous):
125
OpenStudy (anonymous):
That's another good way to do it.^
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OpenStudy (anonymous):
sum of all the angles of a triangle is 180 degree. hence 35 + 90 + angle BCA =180 125 + angle BCA = 180 angle BCA = 180 - 125 angle BCA = 55 degree now see angle BCA and BCD are forming linear pair hence angle BCA + angle BCD = 180 55 + angle BCD = 180 angle BCD = 180-55 angle BCD = 125 degree
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