1

Warm Up

2

3

4

5

6

Page 249 #4-14 even

4. <PKL

6. <KJL

8. <KPL

10. Yes, two pairs of sides and the included angles are

congruent

12. No, the congruent angles are not the included angles

14. No, <NKM and <KML are congruent by the alternate

interior angles theorem but they are not the

included angles.

7

Homework Solutions:

Page 267 #4, 5, 8, 10, 19, 23a

4. No, you cannot tell for sure from the diagram whetehr

or not segments PS and RS are congruent.

8. Yes, you are given that segments AB and CD are

congruent and that segments AD and CB are

congruent. Also segment BD is congruent to itself by

the Reflexive Property of Congruence. So, the

triangles are congruent by SSS.

10. No, you are given that segments JK, KL, LM, and MJ

are congruent. Also segment JL is congruent to

itself by the Reflexive Property of Congruence. So it

should say that ΔJKL≅ΔLMJ or ΔJKL≅ΔJML.

8

Homework Solutions:

Page 274 #4, 5, 7, 8, 9, 11, 16

4. Yes by AAS

8. <F; <L

16. The included sides are congruent;

∆QRS ≅ ∆VUX by ASA

9

A bit more practice before our DLT

10

DLT 2 (4.3-4.5)

a. SAS b. HL c. SSS d. AAA e. ASA

Bonus Question:

Given the following, why are these two triangles congruent?

11

time practicing writing proofs.

12

13

BEC

14

Page 249 #15-18

Page 267 #13, 14

Page 274 #17, 18, 20

CT

15