7. is a line segment and
is its mid-point.
and
are points on the same side of
such that
and
(see Fig). Show that
From the figure, it is clear that :
Adding both sides, we get :
Now, consider and
:
(i) (Proved above)
(ii) (Since P is the midpoint of line AB)
(iii) (Given)
Hence by ASA congruence, we can say that :