
Conditional?
pq
Ex: If linear pair, then supp.
if linear pair, then supp.

Inverse?
–q  –p
Ex: if it is not linear pair, then not supp.

Converse?
qp
Ex: If supp, then Linear pair

Contrapostive?
–q  –p
Ex: if not supp, then not linear pair

Medians
 vertex to midpoint
 centroid
 2/3 the way from vertex (2:1 ratio)

Altitudes
 vertex to opp. side (rt<)
 Orthocenter

Perp. Bisector
 midpoint perp.
 circumcenter
 Equadistant from the verticies

Angle bisector
 vertex to opp. side
 incenter
 equidistant for the sides ( distant form sides are equal)

Deductive reasoning
reasoning ligically form given statement to a conclusion.

Law of detachment
pq if p is true q is too

Law of syollogism
chain rule

Biconditonal statement
conditional and converse combined

Inductive reasoning
recongnizing or observing patterns

Conjecture
Making a guess based on patterns

