线 Flashcards

1
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直线

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2
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3
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4
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相交

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5
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曲线

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6
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垂直

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7
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8
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平行

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9
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线段

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10
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11
Q
A

用打枪法分别数,左边有3+2+1=6条,右边有2+1=3条,一共有6+3=9条

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12
Q
A

折线

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13
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A

射线

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