In the figure 10.34, lines I || m || n and p || q || r. If ∠1=85°, find∠x, ∠y,∠z,∠t,∠s and∠u.
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Answer:
angle x = 85° alternate angle to 1
angle y = 85° corresponding angle
angle z = 85° corresponding to angle x
angle t = 85° corresponding to angle y
angle u = 85° corresponding to 1 and t
angle s = 85° alternate angle to t
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