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Çîðèëãî: Äºðâºí ºíöºãòèéí ýðãýí òîéðíû óðò áà òàëáàéã îëîõ ÷àäâàðòàé áîëñîí áàéíà. Çîðèëò:Ä¿ðñèéã ÿëãàí íýðëýæ, çóðæ ñóðàõ

Àãóóëãà:Ä¿ðñèéí ýðãýí òîéðíû óðò,ò¿¿íèé òàëáàéã îëäîã áàéõ. ,[object Object],[object Object],[object Object],[object Object],[object Object]

Ä¿ðñèéã íýðëýõ: Øàð ºíãºòýé ä¿ðñ¿¿ä: Ãóðâàëæèí Óëààí ºíãºòýé ä¿ðñ¿¿ä: 8-í ºíöºãò Öàãààí ºíãºòýé ä¿ðñ¿¿ä: Äóãóé,òîéðîã,çóéâàí äóãóé Íîãîîí ºíãºòýé ä¿ðñ¿¿ä: 4-í ºíöºãò¿¿ä Õàð ºíãºòýé ä¿ðñ¿¿ä: Øóëóóí,õýð÷èì,ìóðóé øóãàì ßãààí ºíãºòýé ä¿ðñ¿¿ä: Îëîí ºíöºãò ëäýâ òàëò

Äºðâºí ºíöºãò À Â Ñ D Äºðâºí òàëòàé Äºðâºí îðîéòîé

Òýãø ºíöºãò Êâàäðàò Ýíý ä¿ðñ¿¿äýýñ á¿ðäñýí áèåò¿¿äèéã íýðëýõ

Òýãø ºíöºãòèéí òàëáàéã îëîõ: à b S=a*b Ïåðèìåòðèéã îëîõ: à b P=2*(a+b) Êâàäðàòûí òàëáàéã ,ïåðèìåòèéã îëîõ à a S=a*a P= 4*a

Äàäëàãà àæèë: Äàðààõ ä¿ðñèéã ºãñºí õýìæýýãýýð çóðæ S,P -èéã îë. ,[object Object],[object Object],[object Object],[object Object],Áîäîëò-1: Òýãø ºíöºãò S=6*8=48 kb.cm P=2*(6+8)=2*14=28 cm Áîäîëò-2: Êâàäðàò S=15*15=225 kb.mm P=4*15=60 mm

Ãýðèéí äààëãàâàðò: ,[object Object],1 2 3 4 Õýäýí àì äºðâºëæèí ä¿ðñ áàéíà âý? 1 3 2 4 Ä¿ðñèéí òàëáàé, ýðãýí òîéðíû óðòûã îë. Àíãèéí íýã õàíûí óðò 9ñì, ºðãºí íü 2ñì-ýýð áîãèíî . Êâàäðàòûí òàë 7 ìì . Øèðýýíèé òàâöàíãèéí ºðãºí 4äì,ýíý íü óðòààñàà 2 äàõèí áîãèíî áîëíî.

Ä¿ãíýëò: Ñóðàã÷èéã ººðººð íü ä¿ãí¿¿ëýõ. Õè÷ýýëèéã ä¿ãíýí ÿðèëöàõ

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