Question

If AB || EF and EF || CD, then find the value of x​

Answer 1

Answer:

x = 40°

Step-by-step explanation:

Since, AB|| CD

angle ABC = angle BCD = 70° [Alternate angle]

angle CEF + angle ECD = 180° [ CO interior angle]

=> 150° + angle ECD = 180°

=> angle ECD = 180° - 150°

=> angle ECD = 30°

So, x = angle BCD - angle ECD

x = 70° - 30°

x = 40°

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Answer 2

Step-by-step explanation:

ab parallel to CD

angle abc = 2 angle BCD equals to 70 degree

angle ACD + 150 degree equals to 180 degree

angle ECD equals to 180 degree minus 150 degree

angle ECD equals to 30 degree

so X equals to angle BCD minus angle ECD

X equals to 70 degree minus 30 degree

X equals to 40 degree.

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