Triangle Congruence Proofs Write a Paragraph Proof! Write a Flowchart Proof! Write a Flowchart Proof! Write a Two Column Proof! Write a Two Column Proof! Given: ZP and ZR are right . If lines are parallel, then alternate interior angles are congruent. _________________________________ Directions: Complete the proofs on a separate piece . Triangle Congruence Worksheet For each pair to triangles, state the postulate or theorem that can be used to conclude that the triangles are congruent. SAS sss