问题
填空题
如果点P为线段AB的黄金分割点,且AP>BP,线段AB=4,则较短线段PB=______.
答案
∵点P是线段AB的黄金分割点,AP>PB,线段AB=4,
∴PB=4×
=6-23- 5 2
.5
故答案为6-2
.5
如果点P为线段AB的黄金分割点,且AP>BP,线段AB=4,则较短线段PB=______.
∵点P是线段AB的黄金分割点,AP>PB,线段AB=4,
∴PB=4×
=6-23- 5 2
.5
故答案为6-2
.5
补全对话。 从方框A-G中选出可以填入对话空白处。 | |
A: Grey Water. B: Hello, Grey. 1_______ I was just calling to ask…what time are you arriving tomorrow? A: Well, um…, at 3:30. B: 2_______ A: I arrive at 3:30. B: Ok, 3_______ A: Well, I'm a tall boy with golden hair and sunglasses. B: Oh! 4_______ A: Good idea! See you tomorrow. B: 5_______
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