画一画:在点子图上各画一个直角和一个正方形,并且标出直角符号.:…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
问题描述:
画一画:在点子图上各画一个直角和一个正方形,并且标出直角符号.:………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
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