Pls answer the questions given in the above attachment!!
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3. ANS: sum of 3 angles of triangle = 360degree.
therefore,(angle C)=50 degree.
angle C and angle BCD are supplementry.
therefore there measure = 180 degree.
equ.-(angle C)+angle BCD = 180degree.
therefore,50+angle BCD = 180 .
therefore angle BCD = 130.
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