1. Vocabulary
Hinge

3. Example 1A: Using the Hinge Theorem and Its Converse
Compare mBAC and mDAC.

4. Example 1B: Using the Hinge Theorem and Its Converse
Compare EF and FG.

5. Example 1C: Using the Hinge Theorem and Its Converse
Find the range of values for k.

6. Example 3: Proving Triangle Relationships
Write a two-column proof.
Given:
Prove: AD > CB

7. Check It Out! Example 3a
Write a two-column proof.
Given: C is the midpoint of BD.
m1 = m2
m3 > m4
Prove: AB > ED

8. Check It Out! Example 3b
Write a two-column proof.
Given:
SRT  STR
TU > RU
Prove: mTSU > mRSU

9. Lesson Quiz: Part I
1. Compare mABC and mDEF.
2. Compare PS and QR.
mABC > mDEF
PS < QR

10. Lesson Quiz: Part II
3. Find the range of values for z.

11. Lesson Quiz: Part III
4. Write a two-column proof.
Given:
Prove: mXYW < mZWY