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May you help me its an assignment for homework put i don't know how to go about it

May you help me its an assignment for homework put i don't know how to go about it-example-1
User Timroman
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As a consequence of Euclid's parallel postulate, if the two lines are parallel, consecutive interior angles are supplementary, corresponding angles are equal, and alternate angles are equal.

so with that in mind we can say that the angle BGH is equal to the angle GHC so both of them are 60°

so in this way we can find the value of x

3x=60

clearing x

x=60/3 =20

User Mavilein
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