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Why does the angular bisector have to make 120 degree angle?

Why does the angular bisector have to make 120 degree angle?

Question Image
Grade:11

2 Answers

Akshay
185 Points
6 years ago
In this case
So, bisector will make 120 (=180-60) angle with +ve x-axis
Akshay
185 Points
6 years ago
In this case angle(PQR)=120. So, bisector will make 60(=120/2) angle with PQ, which is -ve x-axis. 
So, bisector will make 120 (=180-60) angle with +ve x-axis

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