Subch. C. PROTECTION OF PERSONS
PC §9.31. SELF-DEFENSE. (a) Except as provided in Subsection (b),
a person is justified in using force against another when and to the
degree he reasonably believes the force is immediately necessary to
protect himself against the other's use or attempted use of unlawful
force.
PC §9.32. DEADLY FORCE IN DEFENSE OF PERSON. (a) A person
is justified in using deadly force against another:
(1) if he would be justified in using force against the other under
Section 9.31;
(2) if a reasonable person in the actor's situation would not have
retreated; and
(3) when and to the degree he reasonably believes the deadly
force is immediately necessary:
(A) to protect himself against the other's use or attempted use
of unlawful deadly force;