Page 155 - Grade 10 C.Math

D C F X

Curriculum Development Centre

60° 60°
A E
4.5 cm B

-u_ /]vf AB nfO{ AB = BE x'g] u/L E ;Dd / DC nfO{ X ;Dd nDAofpg'xf];\ .

-3_ laGb' A df 60° sf] sf]0f agfO{ o;n] DX nfO{ sf6]sf] laGb'nfO{ F gfd lbg'xf];\ .

-ª_ laGb'x¿ A / F, F / E hf]8\g'xf];\ .

o;/L cfjZos AEF tof/ eof] h;sf] If]qkmn ;=r= ABCD sf] If]qkmn ;Fu a/fa/ x'G5 .

'
'
(d) lbOPsf] rteh;“u a/fa/ If]qkmn xg] lqehsf] /rgf
{
'
pbfx/0f 5
PQ = 5 cm, QR = 5.5 cm RS = 5.5 cm, SP = 7 cm / PQR = 60° ePsf] rt'e'{h;Fu a/fa/
If]qkmn x'g] u/L PST /rgf ug'{xf];\ . S

;dfwfg R

-s_ lbOPsf] gfkcg';f/sf] gd'gf lrq lvRg'xf];\ .
]
]
\
{
'
]
]
-v_ lbOPsf gfksf rteh PQRS sf /rgf ugxf; . P T
'
{
'
Q
(i) PQ = 5 cm sf] /]vf lvRg'xf];\ / laGb' Q
df PQR = 60° sf] sf]0f lvRg'xf];\ .
(ii) Q af6 5.5 cm sf] rfkn] R df lrx\g nufpg'xf];\ .
152 ul0ft, sIff – 10