2013 · Q86
The bisectors BI and CI of the angles B and C of a triangle ABC meet at I. What is ∠BIC equal to?
Elementary MathematicsGeometry
- A90°−A/4
- B90°+A/4
- C90°−A/2
- D90°+A/2
Explanation
Incentre: 90+A/2. Answer D.
The bisectors BI and CI of the angles B and C of a triangle ABC meet at I. What is ∠BIC equal to?
Explanation
Incentre: 90+A/2. Answer D.