A.從起點(diǎn)向終點(diǎn)繪制草圖,再從終點(diǎn)反向繪制草圖,若其中一導(dǎo)線點(diǎn)接近,其余的錯開,則此點(diǎn)測角錯誤B.正反向推算方位角比對,方位角相近的邊,則此角有誤
C.從起點(diǎn)向終點(diǎn)根據(jù)角度和邊長直接計(jì)算坐標(biāo)增量,推算各點(diǎn)坐標(biāo),再從終點(diǎn)向起點(diǎn)同法推算各點(diǎn)坐標(biāo),同點(diǎn)坐標(biāo)接近者,此點(diǎn)測角有誤
D.長短邊夾角測角有誤
E.導(dǎo)線中間點(diǎn)測角有誤