Geography Terms Flashcards
formed by negating the hypothesis and conclusion ~p–>~q
inverse
formed by switching the hypothesis and conclusion q–>p
converse
formed by negating and switching the hypothesis and conclusion ~q–>~p
contrapostive
p^q
conjunction
p v q
disjunction
p–>q
conditional
~p–>~q
inverse
p<–>q
biconditional
if a=b, then a+c= b+c
addition property
If a=b, then a-c=b-c
subtraction property
If a=b, then a-c=b-c
multiplication property
If a=b, then a/c=b/c
division property
a(b+c), then a(b+c)= ab+ac
distributive property
If a=b then a may be replaced by b in any
substitution property
For any real number a, a=a (a value always equals itself)
reflexive property
If a=b, then b=a
symmetric property
If a=b, and b=c, then a=c
transitive property
p–>q
p
———
q
law of detachment
p–>q
q–>r
———
p–>r
law of syllogism
For any segment AB, AB is congruent to AB
Reflexive property of congruence
If AB is congruent to CD, then CD is congruent to AB
symmetric property of congruence
If AB is congruent to CD and CD is congruent to EF then AB is congruent to EF
transitive property of congruence
