Ina whakarahia tētahi mea, ka noho pūmau te āhua, te ahunga me ngā koki, engari ka rerekē te roa o ngā tapa. Ka whakareatia ia tapa ki te taurahi kia hua mai ngā tapa o te mātātuhi (TRP 2010:323). / If something is enlarged, its shape, orientation and its angles remain invariant, but the length of the sides change. Each side is multiplied by a scale factor to produce the sides of the image of the object (TRP 2010:323).

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