Math, asked by lavisingh50, 10 months ago

jalde kejeya please

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Answers

Answered by ShristiAasu

1

Answer:

20°

Step-by-step explanation:

AB||CD

so,angle ABC=angle BCD

also

EF||CD

so,angle CEF+angle ECD=180°

therefore,

angle ECD=40°

angle BCD-angle ECD= x°

60°-40°=20°

Hence,x=20°.

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