He kīanga pāngarau e whakaatu ana i te pānga o ētahi taurangi e rua, nui ake rānei. Hei tauira, ko te ture hei tātai i te horahanga o te tapawhā hāngai ka whakaatu i te pānga kei waenganui i te horahanga, te whānui me te roa o te tapawhā hāngai..
A mathematical expression which shows a relationship between variables. For example, the formula for calculating the area of a rectangle represents the relationship between the area, width and length of a rectangle.