Page 185 - Revised Maths Wisdom Class - 6

Answers 183

13. - 10118 14. 38 problems 15. Perimeter of ∆ = 10 1 cm, Perimeter of square = 9 1 cm, Perimeter of triangle is more by 1 1 cm.
1785 2 3 6

REVIEW TIME
40
4
A. 1. Five – elevenths 2. 14 3. Numerator = 1 4. 5 2 5. True 6. 11 7. 7 kg 8. 6 9. 14 10. 18
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9
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B. 1. (b) 2. (b) 3. (c) 4. (d) 5. (b) 6. (a) 7. (b) 8. (d) 9. (b) 10. (c)
4 6
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C. 1. 8 2. unit 3. less 4. improper 5. 14 21
D. 1. F 2. T 3. T 4. F 5. T
5 1 1 4
E. 1. 2. 3. 4.
18 36 10 9
F. 1. b 2. a 3. a
19
G. 1. Yes 2. 1 m 3. 3 4. Students = ` 34000, Staff = ` 8500 5. , 5 pieces
5 24
Integrated Question
11 7 9 3 1 3 33 11 111
1. < < < < < < 2. 3.
200 100 100 25 5 10 100 40 200
Practice Paper - 2
1. (d) 2. (a) 3. (b) 4. (c) 5. (a) 6. unit 7. improper fraction 8. 1 9. 1
10. 100 11. True 12. False 13. True 14. True 15. False 16. a 17. b 18. d 19. b
31 13
20. b 21. b 22. 2 23. 1 24. 900 25. 5400
36 30
5 7 11 13 21 1 13 5
26. , , , , 27. 3 28. 29.
8 8 8 8 8 18 18 18
Chapter-6 : Lines and Angles

Exercise - 6A
1. (a) position or location on a plane (b) plane (c) parallel (d) collinear
2. Points: A, B, C, D, E, F, G and H Lines: AB, BC, CD, DA, EF, FG, GH, HE, DH, AE, CG and BF
Planes: ABCD, EFGH, BFGC, AEHD, AEFB and DHGC 3. Unlimited 4. Exactly one
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5. (a) AC CD DB AD AB and CB (b) DC CB BA (c) AB BC CA (d) AB BC CD DE EF FA
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(e) AB BC CD DE EA EC and EB (f) AB BC CD DA AC BD DE EB AE and EC
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Exercise - 6B
1. Do it yourself. 2. Do it yourself. 3. (a) 90° (b) 30° (c) 180°
Exercise - 6C
1. (a) 90° (b) 180° 2. (a) True (b) False (c) True (d) True
3. (a) Acute: 23°, 89° (b) Obtuse: 91°, 179° 4. (a) Acute (b) Obtuse (c) straight (d) acute (e) an obtuse angle
5. (a) Right angle (b) Straight angle (c) Straight angle (d) Right angle 6. (a) 0° (b) 90° (c) 180° (d) 90°
7. (a) 45° (b) 270° (c) 120° (d) 360° 8. (a) Acute (b) Obtuse (c) Refl ex (d) Obtuse (e) Acute
(f) Refl ex (g) Refl ex (h) Obtuse 9. Do it yourself 10. Do it yourself 11. Do it yourself
Review Time
A. 1. Do it yourself 2. No 3. True 4. Do it yourself 5. 180° 6. Refl ex angle
B. 1. (d) 2. (c) 3. (c) 4. (a) 5. (c) 6. (b) 7. (c)
C. 1. Line segment 2. Infi nite 3. Obtuse 4. Straight angle 5. obtuse
D. 1. T 2. T 3. F 4. T
E. 1. (c) 2. (b) 3. (c) 4. (c) F. 1. (a) 2. (b)
G. 1. (a) 54° (b) 60° (c) 270° 2. (a) Refl ex (b) refl ex (c) acute (d) obtuse
3. Acute → 1, 3, 6, 8, Obtuse → 2, 4, 5, 7 4. Ray 5. Two
Integrated Question
(a) Road 1, 2 (b) do it yourself (c) Road 3 (d) 12 (e) do it yourself