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ԲÄڽÓÈý½ÇÐÎ \(\triangle ABC\) µÄһÌõ±ß \(AB\) ÔÚֱ¾¶Éϣ¬¹ʹ¹³Éֱ½ÇÈý½ÇÐΣ¬\(\angle ACB=90^\circ\)£¬ÓÚÊÇ \(\angle CAB=90^\circ-\angle B\)£»Óɴ˵óö \(\angle EAC=\angle A-\angle CAB=\angle A+\angle B-90^\circ\)¡£½øһ²½£¬´ÓËĵã \(A,C,D,E\) ¹²Բ֮ÊÂʵÅжÏ \(\angle D\) Óë \(\angle EAC\) »¥²¹£¬¹ÊÓÐ
\[
\angle D=180^\circ-\angle EAC=270^\circ-(\angle A+\angle B)=270^\circ-136^\circ=134^\circ
\]
ԲÄڽÓÈý½ÇÐÎ \(\triangle ABC\) µÄһÌõ±ß \(AB\) ÔÚֱ¾¶Éϣ¬¹ʹ¹³Éֱ½ÇÈý½ÇÐΣ¬\(\angle ACB=90^\circ\)£¬ÓÚÊÇ \(\angle CAB=90^\circ-\angle B\)£»Óɴ˵óö \(\angle EAC=\angle A-\angle CAB=\angle A+\angle B-90^\circ\)¡£½øһ²½£¬´ÓËĵã \(A,C,D,E\) ¹²Բ֮ÊÂʵÅжÏ \(\angle D\) Óë \(\angle EAC\) »¥²¹£¬¹ÊÓÐ
\[
\angle D=180^\circ-\angle EAC=270^\circ-(\angle A+\angle B)=270^\circ-136^\circ=134^\circ
\]



