Question

please solve this question​

Answer 1

angle ABE = angle ECD .....corresponding angles

Therefore,

angle ECD = 72°

we know that,

sum of all the angles of the traingle is 180°

Therefore,

In traingle ECD,

angle ECD + angle EDC + angle CED = 180°

72 ° + 40° + x = 180°

112° +x = 180°

x= 180° -112°

= 68°

Therefore,

x= 68°

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