Find the centre of rotation?
1 Answer
The centre of rotation is
Explanation:
Figure
I'll pick
P=(2,–2) and its corresponding pointP^star=(3,5).
Measure the vertical distance between these two points. Go from
My vertical distance is
5-(–2)=7 .
Measure the horizontal difference between them too, but this time, go from
My horizontal distance is
2-3=–1 .
Split the vertical difference
My two numbers will be
3 and4 in that order, since3-4=–1.
The centre of rotation will be
color(white)= (2-3, " "–2+4)
=(–1," "2) .
We can see this is the centre of rotation because we can draw a
From question above