We continued our work with trapezoids today by going over how to work with isosceles trapezoids. These have congruent legs, base angles, and diagonals. We went through these properties and showed how they would be applied in a couple of different proof problems. The students then got to work on their chapter 5 review sheet in class.
Assignment: Chapter 5 review sheet
Chapter 5 Test tomorrow
Review Sheet Answers
Practice 20
1. true
2. false
3. false
4. true
5. false
6. angle Q
7. RQ
8. 7.5
9. 3.7
10. trapezoid
11. 6
12. x = 3; DF = 18
13. angle GFE = 92; angle DEF = 88
14. rectangle
15. angle WXY congruent to angle WZY
16. WX parallel to ZY or WZ congruent to XY
17. WX parallel to ZY or WZ congruent to XY
18. ZP congruent to PX
19. proof
statements reasons
angle XWZ congruent to angle XYZ given
WX parallel to ZY given
angle WXZ congruent to angle XZY if parallel lines, AIA congruent
ZX congruent to ZX reflexive
triangle XWZ congruent to tri. ZYX AAS
WX congruent to ZY CPCTC
WXYZ is parallelogram if one pair of opp. sides is
congruent and parallel then
parallel.
Quadrilaterals
1. 92, 88
2. 10
3. x = 2
4. x = 3
5. AE = 13.4
6. 90
7. angle HEF congruent to angle HGF
8. EF parallel to HG or EH congruent to FG
9. EF parallel to HG or EH congruent to FG
10. I is midpoint of HF
11. angle A ; DE = 13
12. BC = 24
13. trapezoid
14. median / midsegment
15. isosceles trapezoid
16. 18
17. 80, 80
18. rectangle
19. rhombus
20. isosceles trapezoid
Test 20; Chapter 5
1. triangle YWX
2. angle XYZ
3. 110
4. a. 30 b. 64
5. a. 12 b. 6
6. 4
7. rectangle
8. rhombus
9. parallelogram
10. rectangle
11. rhombus
12. square
13. sometimes
14. sometimes
15. never
16. sometimes
17. median ; midsegment
18. a. 115; b. 65
19. 7
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