Mathematics

1st -

4thgrade

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四年级数学 单元六 - 空间\线和角

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  • 1. Multiple Choice
    30 seconds
    1 pt

    哪个正多边形的角是锐角?

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  • 2. Multiple Choice
    30 seconds
    1 pt
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    (a)锐角,(b)钝角

    (a)锐角,(b)直角

    (a)锐角,(b)锐角

  • 3. Multiple Choice
    30 seconds
    1 pt
    Image

    互相垂直的两条线是。。。

    PQ,RS

    PS,RQ

    SQ,RP

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