We answered several homework questions today on how to work with midpoints and systems of equations. We then did our final two practice proofs using parallelograms. There is one of these on the quiz tomorrow, so everyone got one last chance to hone their proof skills. The rest of the period was used to work on the ch. 5 quiz review assignment.
Assignment: Chapter 5 quiz review WS
Ch. 5 Quiz tomorrow
Review Sheet Answers:
Page 1
1. parallel and congruent
2. congruent and parallel
3. congruent
4. diagonals
5. yes; both diagonals bisect
6. no; only one set of opp. sides are parallel
7. no; only 1 set of opp. sides are parallel
8. no; only 1 set of opp. sides are congruent
9. x = 3; y = 2
10. x = 37; y = 22
11. x = 9; y = 10
pg. 173; CE #1-9
1. yes; both pair of opp. sides congruent
2. yes; one pair of opp. sides are congruent and parallel
3. no; only one diagonal bisects
4. yes; both diagonals bisect
5. no; only 1 pair of opp. angles are congruent
6. yes; both pair of SSI angles are supplementary
7. yes; both pair of opp. sides are parallel
8. no; only 1 pair of opp. sides are congruent
9. yes; both pair of opp. sides are parallel
Midsegment Problems
1, x = 8; y = 10; z = 10
2. x = 6.5
3. x = 20
4. x = 9
5. x = 31
6. x = 10
7. x = 60; y = 140
8. x = 8.75; y = 15
9. x = 50
10. x = 6; y = 6.5
Theorems Involving Parallel Lines
1. true
2. false
3. true
4. true
5. x = 20; y = 10
6. x =5; y = 3
7. 15
8. 27
9. 6
10. 2a
11. 84
12. 70
13. 72
14. 7
15. 16
16. 6
17. 2
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