Page 163 - Grade 10 C.Math

k|df0f
tYox¿ sf/0fx¿
1. AOC = 180° l;wf /]vfdf ag]sf] ;/n sf]0f ePsfn]

Pp6} rfk ADC df ag]sf kl/lwsf] sf]0f
2. ABC = AOC
ABC / s]Gb|Lo sf]0f AOC ePsfn]
Curriculum Development Centre
tYo (1) / (2) af6
3. ABC = x 180° = 90°

k|dfl0ft eof] .

s] of] ;fWonfO{ cGo ljlwaf6 klg k|dfl0ft ug{ ;lsG5 < 5nkmn ug'{xf];\ .
;fWo 4. rj|mLo rt'e'{hsf ;Dd'v sf]0fx¿ kl/k'/s x'G5g\ . A

yfxf lbOPsf] M s]Gb|laGb' O ePsf] j[Ttdf rj|mLo rt'e'{h D
ABCD sf ;Dd'v sf]0fx¿ BAD, BCD / ABC, ADC x'g\ . O

k|fdfl0ft ug'{kg]{ M BAD + BCD = 180° / ABC + ADC = 180°
B
/rgf M BO / DO hf]8f}F .
C
k|df0f M

tYox¿ sf/0fx¿
Pp6} rfk BAD df ag]sf kl/lwsf]0f /
1. 2BAD = BOD
s]Gb|Lo sf]0f ePsfn]
Pp6} rfk BCD df ag]sf kl/lwsf]0f /
2. 2BCD = a[xt sf]0f BOD
s]Gb|Lo sf]0f ePsfn]

3. 2(BAD + BCD) = BOD + a[xtsf]0f BOD
cyjf, 2(BAD + BCD) = 360° tYo (1) / (2) hf]8\bf
cyjf, BAD + BCD = 180°
4. rt'e'{hsf leqL sf]0fx¿sf] of]ukmn
4. ABC + ADC = 180°
360° x'g] ePsfn]
A
pbfx/0f 1
x°
lrqdf O j[Ttsf] s]Gb| 5 . olb OBC = 30° /
BAC = x° eP x° sf] dfg slt x'G5 < O

kTtf nufpg'xf];\ . 30°
B C

160 ul0ft, sIff – 10