Explanations Flashcards
Postulate
statement of fact that is accepted without proof
Theorem
statement of fact that can be proven
Conjecture
is a statement that seems to be true but no proof has yet been developed
Complementary angles
they add up to 90
What does MN (with no line) mean
a value
Adjacent angle
- share a vertex
- share a ray
- no common interior points
Vertical angles
nonadjacent angles when two lines intersect
Supplementary angles
adds up to 180
Skew lines
3 Dimensional - dont intersect and are not parallel
Corresponding angles
___________a/________
/
________a/_____________
/
Alternate interior angles
____________/_________
/ b
________b/_____________
/
Alternate exterior angles
___________c/________
/
__________/_____________
/c
Same side interior angles
_____________/________
/ d
__________/d_____________
/
Parallel postulate
- if lines are parallel the corresponding angles are equal <1=<2
____________/1________
/
_________/2_____________
/
