请教大牛本月JJ79题！！！

mend_si · 发表于 2006-11-21 05:17:00

79.There is one more I remember, but couldn't draw - 4 lines interect each other forming a "#" not necessarily //. 4 corner w, x, y and z. ask x+z=?

1) w=95 2)z=125 Answer is D for sure

解：待补充

类似于GWD1-22 求x+y

四边形四个内角的和等于360度, 四个外角的和也等于360度, 题中x, y, z, w分别是四个外角, 所以已知z和w就可以求出x+y

即 x+y=360-z-w

这题答案到底是啥？？？

plbl1510 · 发表于 2006-11-21 07:08:00

answer is D

plbl1510 · 发表于 2006-11-21 07:09:00

Sorry......the answer is C. x+y=360-z-w , you know W, know Z, you can solve the problem.

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