Question

in the given figure a d parallel CD parallel to EF find the value of x​

Answer 1

$\huge\underline\bold\red{Solution}$

/_ABC = /_BCD = 70° [ Alternate angles]

/_CEF + /_ECD = 180°

130° + /_ECD = 180

/_ECD = 180-130 = 50°

/_BCE = /_BCD - /_ECD

/_BCE = 70-50

/_BCE = 20°

☺️ Hope it helps you!!!

Answer 2

$\huge\underline\mathscr{SOLUTION}$

/_ABC = /_BCD = 70° [alternate angles]

/_CEF + /_ECD = 180

130 + /_ECD = 180

/_ECD = 180 -130 = 50°

Now

/_BCD = 70

50 + x = 70

x = 70 - 50 = 20°