A straight line is drawn through vertex A of triangle ABC parallel to side BC.
| May 31, 2021 | education
A straight line is drawn through vertex A of triangle ABC parallel to side BC. Which of the angles formed at the vertex A are equal to the angles of the triangle ABC?
If through the vertex A of any triangle ABC draw a straight line parallel to the side BC, then the external angle between this straight line and the side AB will be equal to the angle between the sides AB and BC. Similarly, the outer angle formed between the straight line and the AC side will be equal to the angle between the AC and BC sides.
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