Section 2.5 – Proving Statements about Segments
*Watch this video to give you a better grasp of the concepts listed below.*
Theorem: A true statement that follows as a result of another true statement.
 Must be proven
 Used as reasons in proofs
Theorem 2.1 - Properties of Segment Congruence: Segment congruence is reflexive, symmetric and
transitive.
Reflexive: For any segment
Symmetric: If
, then
Transitive: If
and If
Example 1:
Example 2:
, then If
Example 3:
Example 4:
*Watch this video to see the examples worked through*