Page 445 - Math Smart - 7

Check My Understanding (Pg 139) 9. ^8 = 40° ^5 = 68° ^c = 72° Ad = 45°
1. 100° 2.25° 3.37° 4.45 5. 31 Ze = 63° /If =45° Lg = 15° ^5 = 105°
Ai= 108° /.;■= 108°
Check My Understanding (Pg 139)
10. ^p = 65° = 65° Ar=60° As = 35°
1. 8)27° b)27°
2. 8)151° b)29° 11. ^8 = 80° zl5 = 80° Ac= 100° /.d= 100'
3. 8 = 10,5 = 25 ^e = 90° ^7=62°
12. Za = 58° /15 = 77° Ac = 45° Ad =77°
Check My Understanding (Pg 141) ^e = 45° /if =58°
1.54° 2.209° 3. 112'
13. ^8 = 88° /i5 = 73° Ac=G2°
^c/=92° zle = 88° Af=73°
Try and Apply (Accept any possible pairs)
14.
Check My Understanding (Pg 146)
1. 138° 2.25° 3.23° 4. 74°
Check My Understanding (Pg 151)
1. 8)90° b)45° c)90° d)45°
2. 8)90° b)72° c)54° d) 108'
3. 8)117° b)63° 15. They are paraliel to each other.
4. 123°
5. a) a = 60° 5 = 30° b) 20° c) 10 mm Unit?
d) 5 mm e) 30 mm
6. a)ZCED = ZCDE=47° b) 5 cm Check My Understanding (Pg 162)
7. 8= 115 5 = 35° 1.8)
8. 8)70° b)5 Colour Tally Total
c) 70° + 110° + 110° + 70° = 360° Red
Blue
Revision (Pg 153) White
1. AABC = 45° ABCD =^48° Silver
^ ODE =46° zlDEF=120°
b) Make of cellphone Tally Total
^EFG=66° ZFGH= 122°
Apple
^GH/=77° zlH/J=67°
Samsung
^/JK=129° ZJK/.= 124°
2. 8) \ b) C) Mode of transport Tally Total
Bus
Car
Walk
Bicvcle
c) d)
d) Reading Watching TV
Tally
Total
e) Separate Do not separate
Tally
Total
(Accept any other possible answers)
2. a) The total for Tuesday is 6. b)4
c) 10 d) Text Message e) Video Call
f) 9 g) Thursday h) Friday
h)
Check My Understanding (Pg 165)
1. a)
3. 8)62° b)25° c)20° d) 15° Colour of Car Tally Frequency
e)a = 25°, c=17.5°, d=20°
Red tttt tttt ll 12
f)x = 23°, 8=111°, 5 = 69°
Mil llll
4. 8)60° b)50° c)105° d)80° e)137°f)13° Blue TTTttm 10
9) 113° h)99° 1) Rhombus, 3m. 3m j) 109° Green 1111 4
5. a) 90° b) 90° c) 90° d) 45°
6. 8)90° b)110° c) 70° d) 35° White Iftfllll 9
7. 8)123° b)57° Silver 1111 4
8. 52°
Black 1 1