We spent some time reviewing vocabulary from chapter 4 today with a couple of overlapping proofs. We also went over a couple of isosceles triangle calculations problems together. The students spent the rest of the time working on their chapter 4 review sheet in preparation for the test tomorrow.
Assignment: Chapter 4 review sheet
Chapter 4 Test tomorrow
Test 14 answer key
1. segment SY
2. angle Q
3. triangle SQY
4. a. none b. none
5. a. triangle QRP congruent to triangle SRT b. SAS
6. a. triangle KLJ congruent to triangle NLM b. ASA
7. a. triangle ABC congruent to triangle DEC b. SAS
8. a. triangle FIG congruent to triangle HIG b. ASA
9. a. triangle OQR congruent to triangle QRP b. SSS
10. a. none b. none
11. after
12. after
13. before
14. before
15. before
16. after
17. after
18. after
Test 15 answer key
1. a. segment QR b. segments PQ and PR
2. a. angle Y or angle Z
b. segment YZ
c. angle X
d. segment XY or segment XZ
3. angle A, angle 1
4. angle 3, angle C
5. segment AB, segment DB
6. segment DC, segment BC
7. 7
8. 37.5
9. a. triangle ABC congruent to triangle DEC
b. HL
10. a. none b. none
11. a. triangle JKL congruent to triangle NML b. AAS
12. a. triangle PQR congruent to triangle PSR b. ASA
13. Proof
statements reasons
AB parallel to DE; angle B congruent to angle D given
angle 1 congruent to angle 4 if lines parallel, then AIA congruent
AC congruent to AC reflexive
Tri. ABC congruent to Tri. CDA AAS
AD congruent to BC CPCTC
Fill in the Blank Proof worksheet
1. AB parallel to DC
2. if lines parallel, then AIA congruent
3. angle B congruent to angle D
4. reflexive
5. AAS
6. BC congruent to DA
1. QK congruent to QA
2. given
3. angle 1 congruent to angle 2
4. QB congruent to QB
5. SAS
6. KB congruent to AB 6. CPCTC
1. BD perp. to AB; BD perp. to DE 1. given
2. def. of perpendicular
3. angle B congruent to angle D 3. all right angles congruent
4. vertical angles congruent
5. given
6. tri. ABC congruent to tri. EDC 6. AAS congruent theorem
7. angle A congruent to angle E 7. CPCTC
1. FJ congruent to GH 1. given
2.
3. reflexive
4. tri. JFH congruent to GHF 4. SAS congruence postulate
5. FG congruent to JH 5. CPCTC
1. given
2. angle P and angle N are right angles
3. angle P congruent to angle N
4. MN congruent to MP
5. MO congruent to MO 5. reflexive
6. tri. MPO congruent to tri MNO 6. HL congruence theorem
7. angle NOM congruent to angle POM 7. CPCTC
1. CN perp. to AB 1. given
2. def. of perp.
3. angle ANC congruent to angle BNC 3. all right angles are congruent
4. CN bisects angle ACB
5. angle 1 congruent to angle 2 5. def. of bisect
6. CN congruent to CN 6. reflexive
7. tri. ANC congruent to tri. BNC 7. ASA congruence postulate
8. AC conguent to BC 8. CPCTC
9. tri. ABC is isosceles 9. def. of isosceles triangle
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