Download Proving Angles are Congruent

Section 2-6: Geometric
Proofs
Rigor – prove and apply the Vertical Angles Theorem
and the Linear Pair Theorem
Relevance – These simple proof gives you the
opportunity to practice your logic and proof building
skills
To the core book!
 Turn to page 75
 Complete the proof of the linear pair theorem
together
Vertical Angles Theorem
 What are vertical angles again?
 Vertical Angles Theorem: Vertical
angles are congruent.
Proof of the Vertical Angles Theorem
 KNOW THIS PROOF FOR YOUR EXAM!
 Turn to page 76
 We will prove it together
Add these two theorems to your notes
 Congruent Supplements Theorem
 Congruent Complements Theorem
 Same thing as  supplements theorem,
only with complementary angles.
2-6 Homework
 Geometry:
 Core book pg 77 #1 – 10 (ALL)
 Core book pg 78 # 2, 3
 Geometry Honors:
 Core book pg 77 #1-10 (ALL)
 Core book pg 78 #1 – 3 (ALL)
 Due Monday for ALL CLASSES
 2-6 classwork will be assigned next week