If an angle of measure 80° is reflected in a line of symmetry, then the reflection is an _____ of measure_____.

The number of lines of symmetry in a rectangle and a square are _______ (equal/unequal).

If a line segment of length 5cm is reflected in a line of symmetry (mirror), then its reflection (image) is a ______ of length _____.

The image of a point lying on a line l with respect to the line of symmetry l lies on ______.

In Fig. 9.10, if B is the image of the point A with respect to the line l and P is any point lying on l, then the lengths of line segments PA and PB are ______.