GeoGebra

角平分线的性质

Author:欧几里得, Cao Yiming, 陈俊杰
Topic:Triangles
1.如图所示，已知COD=30
请根据角平分线的性质，完成如下题目。

(1).求DOE的度数。

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

(2).求COE的度数？

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)
2.如图所示，已知COE=70

(1).求COD的度数？

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

(2).求EOD的度数？

Select all that apply
  • A
  • B
  • C
  • D
Check my answer (3)

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