Column A Column B x+z 90+y

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问题

Column A                Column B
x+z                     90+y

选项 A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given

答案C

解析 本题的正确答案为(C)。由三角形的内角和等于180o可得:∠A+90+y=∠A+z+x=180 → 90+y=x+z
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