Page 176 - Grade 10 C.Math

A
3.(a) lbOPsf] ABC df ABC = 90°, ACB = 30° /
AB = cm eP ABC sf] If]qkmn kTtf

nufpg'xf];\ . cm
30°
B C
Curriculum Development Centre
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]
]
]
(b) PQR df PR = 4cm, QR = 7cm, P = 110° / Q = 40° eP PQR sf Ifqkmn kTtf nufpgxf; .
\
X
(c) lbOPsf] lrqdf Y = 75°, XY = 8cm, XZ = 14 cm,
XL  YZ / XL = LZ eP XYZ sf] If]qkmn kTtf
nufpg'xf];\ .
75°
Y L Z
4. tn lbOPsf ;dfgfGt/ rt'e'{hx¿sf] If]qkmn kTtf nufpg'xf];\ M

(a) (b) (c)
P Q A B X Y
120°
8 cm
5 cm 8 cm
60° 45°
S R D C W Z
11 cm 6 cm 12 cm

E 12 cm F
5.(a) EFGH Pp6f ;dafx' rt'e'{h xf] h;sf] If]qkmn
72cm , EF = 12 cm eP EFG / FGH sf]
2
dfg lgsfNg'xf];\ .
H G

A E
D
(b) lbOPsf] ;dfgfGt/ rt'e'{h ABCD dfBCE 5 100° 6 cm
h;df A = 100°, BC = 10 cm, EC = 6 cm, ECD = 10°
10°
eP BCE sf] If]qkmn kTtf nufpg'xf];\ .
B C
10 cm

173 ul0ft, sIff – 10