Page 220 - Maths Class 06

11. B Y 3. (a) Kite (b) Rectangle
A (c) Square (d) Trapezium
Z 4. D ABC; D ACD; ACEG; AGFC; AGFD
C
Q 5. Do it yourself 6. Do it yourself
P
7. Do it yourself
X
R 8. Irregular hexagon has unequal sides whereas in a
regular hexagon, all sides and all angles are equal
MCQs
9. Heptagon has 4 diagonals
1. (c), 2. (c), 3. (a), 4. (c), 5. (d), 6. (d), 7. (b), 8. (d), 9. (a),
10. (c), 11. (c). EXERCISE 5.6
1. (a) 12, 8, 6 (b) 12, 8, 6 (c) 2, 0, 3 (d) 1, 1, 2
EXERCISE 5.1 (e) 0, 0, 1 (f) 9, 6, 3 (g) 6, 4, 4 (h) 8, 5, 4
2. (a) PR (b) AC (c) PS 2. (a) ii (b) i (c) iv (d) iii
3. Do it yourself 3. (a) 2 (b) 4
4. Do it yourself 4. Do it yourself

EXERCISE 5.2 MCQs
1. (a) iii. (b) i. (c) ii. 1. (a), 2. (c), 3. (a), 4. (c), 5. (a), 6. (b), 7. (c), 8. (c), 9. (d),
(d) v. (e) iv. 10. (b).
2. (a) Four (b) Two (c) Three
EXERCISE 6.1
3. (a) At 5 (b) At 12 (c) At 12
1. (a) Reducing a weight of 5 kg
4. (a) Acute (b) Reflex (c) Obtuse
(b) Going west
(d) Straight (e) Right
(c) Decrease in population
5. Do it yourself
(d) A with drawal of ` 100
6. (a) 120° (b) 60° (c) 210° (d) 60°
(e) + 34 (f) A profit of ` 7
7. (a) 144° (b) 225° (c) 144° (d) 90°
2. (a) -3 km (b) + ` 500 (c) (– ` 800)
8. (a) 120° (b) 70°
(d) -9 (e) + ` 200 (f) + 3°C
EXERCISE 5.3 3. (a) 7 (b) 0 (c) 8 (d) -2
2. (a) ÐBCM = 90 (b) F 4. (a) -5 (b) -12 (c) 0 (d) -2 (e) -5
°
(c) Yes, each 1 unit (d) Yes 5. (a) 1, 2, 3, 4, 5, 6, 7 (b) -6, -5, -4, - 3, - 2, -1
(c) -4, - 3, - 2, -1 (d) -2, -1, 0, 1, 2
(e) BD AE PF, ,
6. (a) < (b) < (c) > (d) <
EXERCISE 5.4 7. (a) 5 (b) 17 (c) 5
1. (a) Acute angled triangle (d) 8 (e) 5 (f) 4
(b) Obtuse angled triangle 8. (a) False (b) False (c) True (d) False
(c) Obtuse angled triangle
EXERCISE 6.2
(d) Right angled triangle
1. (a) A
2. (a) Acute angled triangle, equilateral triangle B
(b) Right angled triangle, isosceles triangle –2 –1 0 1 2 3 4 5 6 7 8 9 10
(c) Acute angled triangle, isosceles triangle \ (+ 3 ) (+ +7 ) = +10
(d) Obtuse angled triangle, scalene triangle (b) A B
3. 25°, 25°, 4. 90° 5. 60°
–3 –2 –1 0 1 2 3 4 5
6. No, sum of three angles of a triangle can’t be more than
180°.
\ (-3 ) (+ +7 ) = + 4
7. (a) 15° (b) 120°
(c) A
B
EXERCISE 5.5
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1
1. (a) False. A square is a special form of rectangle.
\ (-3 ) (+ -7 ) = -10
(b) True
(d) B A
(c) False. Every rectangle is a parallelogram
(d) True (e) True –10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0 1 2 3
2. (a) iii (b) ii (c) i \ (+ 3 ) (+ -7 ) = -4

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