Download 2. Unit 2 conjectures.

Name ________________________________________ Date ____________________
GEOMETRY
Unit 2: Geometry Basics II
Conjectures and Formulas
Conjecture
Linear Pair
Conjecture
Vertical Angles
Conjecture
Parallel Lines
Conjecture
Converse of the
Parallel Lines
Conjecture
Slope Formula
Found
on
Page
If two angles form a linear pair of angles, then
_____________________________________________
If two angles are vertical angles, then
_____________________________________________
If two parallel lines are cut by a transversal, then
corresponding angles are ______________________,
alternate interior angles are ___________________,
alternate exterior angles are ____________________,
and consecutive interior angles are ________________.
If two lines are cut by a transversal to form two pairs of
congruent corresponding angles, congruent alternate
interior angles, congruent alternate exterior angles, or
supplementary consecutive interior angles, then the
lines are _______________________________.
The slope m of a line (or segment) through P1 and P2
with coordinates  x1 , y1  and  x2 , y2  is
m=
where x1  x2  0 .