,\r\rC.\r@ã.0?1ÉÊA??ä??A??6:7\r0Z 1(;åB?p./I?/ 2 (;4C\rp½/I.\r.*.Z1>Z3.\rZ2>Z4 ? $p/IV¬®½/'²³´p\r.\Z1 + Z2>Z3+Z4 ?³DpEF\r 0Z B D O Z B A C .\r2É24??ä??A??6T7\rN1(;AB?p./I?N2(;ACåp.\r/I.\r.\Z1=Z3+ZB\rZ2=Z4+ZC ?Q$p./I¬'²³´p/p'\rA Z1+Z2=Z3+Z4+ZB+ZC ?DpEF\r 0/ B D C = N B + N C + N B A C\r@ãQ0?1??8?æAC¬ E ?Æ??C?æ A8¬ E,\rN8DC(;CQEp./\rI.\r..N8DONDEC.? $p./IV¬®./'²³´p\rµ/DEC(;ABEp ½/ I ?=`\rZ D E O Z A ? $p./IV¬®./'²³´p\rA Z B D O Z A ?³DpEF\r2??8?æAC¬ E ,\r/BOC(;Ë>” p./I.\rA A B D C = Z C + Z D E C ? $p./I¬'²³´p/p'\r0NOEC(;ABEp./I?=`\rA Z D E C = Z A + Z B ? $p./I¬'²³´p/p'\rA Z B D C = Z C + Z A + Z B ? \r6ÞZ?8\nß8 c p.à?6:7\rx\rZA+Zfi+ZC+ZD=360°?
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