Y> or equal 82P/100
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A triangle always equals 180 degrees
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Based on the definition of an angle bisector, there is an erro in line 1, because, BC is an angle bisector.
<h3>What is an Angle Bisector?</h3>
An angle bisector is a line segment that bisects an angle into congruent parts.
In the proof given, since C is the incenter of the isoscles triangle ABD, therefore, line segment BC bisects ∠ABD.
This implies that BC is an angle bisector of ∠ABD not altitude.
Therefore, based on the definition of an angle bisector, there is an erro in line 1, because, BC is an angle bisector.
Learn more about an angle bisector on:
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