We worked through some final review and homework examples before getting started on the chapter 7 review in class. The review is due tomorrow before we take the test on Chapter 7.
Assignment: Chapter 7 review
Test 28
1. 5c2 / 7a2
2. 1/25
3. 2/9
4. 72
5. 2hs
6. t + h / h
7. g/s
8. g/s or h/t
9. 10
10. 10
11. 4/3
12. triangle DAC
13. AA for similar triangles
14. 3:5
15. AC, AD, CD
16. 15
17. Proof
statements reasons
AS perp. KT; AS perp. SE given
angle K and angle S are rt. angles def. of perpendicular
angle K congruent to angle S all right angles congruent
angle A congruent to angle A reflexive
triangle AKT similar to triangle ASE AA for similar triangles
AK/AS = AT / AE corr. sides of sim. triangles are proportional
AK / AT = AS / AE property of proportions
Test 27
1. need CD = 10 or DE = 2
2. need AE parallel to BD or angle A congruent to angle B or angle E congruent to angle D
3. BC, AE
4. yes, by SSS similarity
5. proportional lengths in triangles theorem
6. a. yes b. yes c. no d. yes
7. 4
8. 12
9. 6.4
10. 12.5
11. 7.5
12. 60
Test 26
1. yes
2. yes
3. no
4. yes
5. no
6. SAS for similar triangles
7. AA for similar triangles
8. none
9. none
10. AA for similar triangles
11. SSS for similar triangles
12. Proof
Statements Reasons
1. angle 1 and angle 2 are complementary Given
angle 2 and angle 3 are complementary Given
2. complements of same angle are congruent
3. reflexive
4. AA for similar triangles
5. corr. sides of similar triangles are proportional
6. property of proportions
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