Question

in the given figure AB||DE, then find the value of angle BCD is?​

Answer 1

Answer:

100+x=180(Linear pair)

x=180-100

x=80°=<FBC.

<EDF=<DFB=180.(Corresponding angles).

120+y=180(Linear pair)

y=180-120

y=60°

80+60+<BCD=180°(Sum of angles).

140+<BCD=180°

<BCD=180-140

<BCD=40°

Therefore, <BCD=40°.

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