Page 50 - Grade 10 C.Math

;dafx' lqe'hsf] If]qkmn

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2
ctM ;dafx' ABC sf] If]qkmn  -e'hf_ x'G5 .
Curriculum Development Centre
;dlåafx' lqe'hsf] If]qkmn (Area of an isosceles triangle)

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A

cfwf/ e'hf BC sf] gfk b PsfO / cGo b'O{ a/fa/
e'hfx¿ AB / AC sf] gfk a PsfO ePsf] ;dlåafx' lqe'h a
ABC sf] /rgf ug'{xf];\ . To;kl5 cfwf/ BC sf] dWolaGb' a
h
D / zLif{laGb' A af6 nDa AD lvRg'xf];\ . h'g ;f] lqe'hsf]
]
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]
F
prfO klg xf . oxf kfOyfuf/; ;fWosf kofu u/L B
]
]
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]
prfO AD kTtf nufpgxf; . D C
\
b
;dsf]0f ADC af6
(AD) = (AC) – (DC) 2
2
2
[AD n] BC nfO{ D laGb'df ;dlåefhg u5{ . ]

ca ABCsf] If]qkmn = x cfwf/ x prfO

t;y{ ;dlåafx' lqe'hsf] If]qkmn , hxfF b = cfwf/ e'hf / a afFsL a/fa/
e'hfsf gfkx¿ x'g\ .

47 ul0ft, sIff – 10