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Mathematics 9 Online
OpenStudy (anonymous):

a trapezium in which AB||CD. Also AD= 4 cm, BC= 4 cm and angle DAB = 70 degree, then angle BCD is

OpenStudy (harsimran_hs4):

|dw:1362667699724:dw|

OpenStudy (harsimran_hs4):

so we need to find ? lets begin bdc = abd ( alternate int angle) adc + dab = 180 clear till now?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

adc+dab=180 [because a and d are cointerior angles]

OpenStudy (harsimran_hs4):

|dw:1362668136914:dw|

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