If the base of an isosceles triangle is produced on both sides, prove that the exterior angles so formed are equal to each other.

Explanation

To prove that the exterior angles formed by extending the base of an isosceles triangle are equal to each other, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Triangle**: Let triangle ABC be an isosceles triangle where AB = AC.

2. **Label the Angles**: Since AB = AC, by the properties of isosceles triangles, the angles opposite these sides are equal. Therefore, we have:
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