Question: In the figure, OA=OB, OC = OD and angle AOB= angle COD. ABC is a straight line. (a) Prove that angle OAC = angle OBD. (b) Prove that angle AOB = angle DBC 唔該哂ching
tommywu
2011-04-05 17:06
引用樓主peter19220於2011-04-05 16:30發表的 中二數學三角形一問 : Question: In the figure, OA=OB, OC = OD and angle AOB= angle COD. ABC is a straight line. (a) Prove that angle OAC = angle OBD. (b) Prove that angle AOB = angle DBC 唔該哂ching
試下proveOAC同OBD係相似.....
d523d323
2011-04-05 17:53
有沒中文版:o)?
tommywu
2011-04-05 17:58
引用第2樓d523d323於2011-04-05 17:53發表的 : 有沒中文版:o)?
直接查字典is ok.........
waynewong
2011-04-05 18:07
麻煩你張相關既野畫埋上張圖
手殘
2011-04-05 18:53
OA=OB, OC = OD angle AOB= angle COD aob+boc=cod+boc
Question: In the figure, OA=OB, OC = OD and angle AOB= angle COD. ABC is a straight line. (a) Prove that angle OAC = angle OBD. (b) Prove that angle AOB = angle DBC 唔該哂ching