Question

in a figure AB is parallel to CD and CD is parallel to EF and y:z =3:7 .find x

Answer 1

Answer:

Let y and z be 3u and 7u

∠x=∠z (Alternate angles)

∠x+∠y=180

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(Angles made on same side of transversal)

Put x=z

∠z+∠y=180

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7u+3u=180

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10u=180

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u=

10

180

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=18

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z=7×18

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=126

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x=z=126

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