If the side `B C` of ` A B C` is produced on both sides, then write the difference between the sum of the exterior angles so formed and `/_A`

Explanation

To solve the problem, we need to find the difference between the sum of the exterior angles formed by extending side BC of triangle ABC and angle A. Here’s the step-by-step solution:

### Step 1: Identify the angles
Let’s denote the angles of triangle ABC as follows:
- Angle A = ∠A
- Angle B = ∠B
- Angle C = ∠C

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