Respuesta :

ballyho126

Answer:

let x be a point and join point c

when XC // AL // BK

∠LAC+∠ACX = 180 (int. angle, XC//BK)

∠ACX = 60


then ∠ACX + ∠BCX = 80

∠BCX = 80 - 60 = 20

∠BCX + ∠B = 180 (int. angle, XC//BK)

∠B = 180 -20 = 160



jcmalone6473

Answer:

let x be a point and join point c

when XC // AL // BK

∠LAC+∠ACX = 180 (int. angle, XC//BK)

∠ACX = 60

then ∠ACX + ∠BCX = 80

∠BCX = 80 - 60 = 20

∠BCX + ∠B = 180 (int. angle, XC//BK)

∠B = 180 -20 = 160

Explanation:

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