1. What additional information do you need to prove ∆ABC = ∆DEF by SAS?
BC = EF

2. Is JM an altitude, a median, both or neither?
(triangles are congruent by SSS)

3. Is JM an altitude, a median, both or neither?

4. What additional information do you need to prove ∆ABC = ∆DEF by AAS?
<C = <F

5. What additional information do you need to prove ∆JKL = ∆MNO by AAS?
JL = MO OR KL = NO

6. Is JM an altitude, a median, both or neither?
(triangles are congruent by AAS)

7. What additional information do you need to prove ∆JKL = ∆MNO by AAA?
Trick Question—∆s cannot be proven congruent by AAA!

8. ∆JAM = ∆_____ by _______?P N M A H
∆JAM = ∆_____ by _______?
HNP
ASA

9. ∆JAM = ∆_____ by _______?
JBM
SAS
(reflexive prop)

10. Is JM an altitude, a median, both or neither?

11. ∆JAM = ∆_____ by _______?R M
∆JAM = ∆_____ by _______?
NOT congruent!

12. ∆JAM = ∆_____ by _______?D A J Y M
∆JAM = ∆_____ by _______?
DAY
ASA
(all radii of a circle are congruent)

13. ∆JAM = ∆_____ by _______?Z M
∆JAM = ∆_____ by _______?
JZM
AAS
(reflexive prop)

14. What additional information do you need to prove ∆ABC = ∆DEF by ASA?

15. Is JM an altitude, a median, both or neither?

16. Is JM an altitude, a median, both or neither?

17. What additional information do you need to prove ∆JKL = ∆MNO by ASA?
JK = MN

18. ∆JAM = ∆_____ by _______?K M A D
∆JAM = ∆_____ by _______?
DKM
AAS
(vertical angles)

19. Is JM an altitude, a median, both or neither?
(triangles are congruent by SAS)

20. The best thing you can do to prepare for the proof is to re-look at the proofs from this unit—especially the ones from the past 2 nights regarding altitude and median.
If you would like to come in Friday morning, I will be at school around 6:30. See you then!