refers to any equality in measure in any 2 geometrical object
congruence
when 2 angles have same measures
congruent angles
if 2 segments have same lenghts
congruent object segments
π¨π©β π¨π©
reflective
If β πβ β π, ππππ β π β β π
symmetric
If π¨π©β πͺπ« πππ πͺπ«β π¬π, ππππ π¨π© β π¬π
transitive
consists of list of statements, and the reasons why those statements are true
2 column proof
uses logic and accepted statements
deductive reasoning
a convincing demonstation that a statement is mathematically true
proof
what theorem is thsi?
π¨πππππ πππππππππππππ ππ πππ ππππ
πππππ ππ ππ πππππππππ ππππππ
πππ πππππππππ.
theorem 5.3
sum of their measures is 180
supplumentary
sum of their measures is 90
complementary
2 angles whose sides from opposite rays
vertical angles
congruent
A point B is between two other points A and C if all three points are collinear and AB +BC = AC.
betweeness of points
any 2 lines in a plane may be ??
parallel or intersecting
some intersecting lines form
perpenicular
2 lines are intersecting if they have a?
common point
2 lines are parallel if?
they do not meet
2 lines are perpendicular if they?
form right angles
line that intersect 2 or more coplanar lines
transversal
name the parts
[?]
————->
[?]
————->
[exterior]
————->
[interior]
————->
[exterior]
correspoding lines, alternate interior and exterior angles are all
congruent
interior and exterior angles on the same side are?
supplementary
formula for side interior angles
180-angle 1