3μ′2D?°??Dê?£oD?????′óà?è¤

O是AB上一点,OD平分 AOC,OE平分 COB,求OD OE
???一图读懂120年OD演变史 附笔记
?

??′úè?1¤×÷?1á|1y′ó£??3??òaò?é??μ£?′ì?¤μ?3μ?DD?°?ê?ò?????é?D?éú??μ?·?ê?£??üóD?úóúìá??D?éú??μ??êá??£

3μ?DD?°?μ?3£ó??Dê??£

?D1

?D·?×??úoó×ù£???·????ò?D·?£?ò?1ò?ò×?μ?×?ê???óúé?·??£??·???ê??éò?à-×?oó×ùé?·?μ???°??£?a???Dê???ó?×ê?′????2?′ó£?3yá???è??ü3μ£?????3μ×ó??êêó??£

?D2

ó?ê??ò?ú°??§??·?éíé?μ?D?·üμ?£??aD?D?·üμ?2??áòò?a?ú3μé???ò???£??ùò???òa2?ê?μúò?′?×?°?£??íoüo??????£·?·¨?òμ¥£??°oó×ù???éò?×??£?′ê1?ùà§??μ?????£?D§1?ò??ù2?′ò?????£

?D3

???°×ùò?±3·?μí£??D·??ú????ìé?úò?×óé?£???·?×?óú??é?£?±3?ò?D·??£?°×ù??????D????è????£?·′?????°??μ??üóD±??ˉ£???·??éò?μ÷????è?μ????è£?è?1y3ì?üóDè¤?£

??ü°ìáD?£o

?ú1úía£?ò???μ÷2é±í?÷£?à??tD?°?μ?μ?μúò???ê?o£ì2£?μú?t???íê?3μ?£êμ?ê?éD?ê?£oo£ì2é?μ?à??t£???óúü?ü??úéú£?ò2DíóDD?éY3ToíóD°-1??°£??à±è????£??1ê???3μà?à′μ??ü?a?Dêμ?éDDò?D??£?y?ù??êμ?ù3????a£???íêè??éò????§??ó?£?′ó???ú?÷·???ìá???°3μ′2?±??×??£


??3¤í???£o027?é?D?úê?í?, ·??í?é?D?úê? ????×ê??£?·??ê:www.027xo.com£?
RMxprt导入2D 的问题 Powered by Discuz

相关推荐