If the image of a point P is P itself, then P is an ___ point.
Any point that remains unaltered under a given transformation is called an invariant point.
So, P is an invariant point. [1 mark]
Question 70
In the figure, the point C is the image of point A in line l and line segment BC intersects the line l at P.
(a) Is the image of P in line l the point P itself?
(b) Is PA = PC?
(c) Is PA + PB = PC + PB?
(d) Is P that point on the line l from which the sum of the distances of points A and B is minimum?