Concepts and measurement: Geometric Constructions-Angle Bisector

The video tutorial demonstrates how to bisect an angle using a compass and straightedge. It begins by explaining the concept of an angle bisector, which divides an angle into two equal parts. The instructor, Chuck, sets the compass to a suitable distance and draws an arc through the angle's sides. He labels the intersection points as B and C. Using the same compass setting, Chuck draws arcs from points B and C, marking their intersection as point D. Finally, he uses a straightedge to draw a line from point A to D, completing the angle bisector.

Explain how Chuck finds point D when drawing the angle bisector.

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What is the final step Chuck takes to complete the angle bisector?

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