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D e a r S t u d e n t, S o l u t i o n) y + 95^{0} = 180^{0} {s t r a i g h t l i n e} y = 180^{0} - 95^{0} y = 85^{0} S i m i l a r l y, w + 135^{0} = 180^{0} w = 180^{0} - 135^{0} w = 45^{0} N o w, z + 90^{0} = 180^{0} z = 180^{0} - 90^{0} z = 90^{0} N o w, 60^{0} + a n g l e A E D = 180^{0} a n g l e A E D = 180^{0} - 60^{0} = 120^{0} A n g l e A E D = x = 120^{0} {a l t e r n a t e a n g l e s} R e g a r d s!

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