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Concept of Similarity 相似的概念
Author:
Alex CHIK
圖片原來長6單位和闊8單位。若闊改為12單位，則長應為多少？ 圖片原來長9單位和闊16單位。若闊改為24單位，則長應為多少？
GeoGebra 互動數學教室
http://www.geogebra.hk
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