....please solve this properly (given,prove,proof)
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. i know pic is not gud
but please solve
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Step-by-step explanation:
give= angle abc=140 ,CDE=100
AB//DE
draw line CX parallel to DE
DCX+100=180 (sum of co interior angle=180)
angle DCX=80
if CX//DE than CX//AB
angle BCX =ABC (alternate interior angle)
BCX=140
angle BCX=BCD+DCX
140=BCD+80
BCD=140-80
BCD=60
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