What does it mean to bisect a line?

What does it mean to bisect a line?

• A. To extend it indefinitely.
• B. To cut it in half.
• C. To rotate it 90 degrees.
• D. To reflect it across a line.

Answer: (B)

Bisecting a line means cutting it into two equal parts. When a point lies on a line segment and creates two segments with the same length, that point is the midpoint, the place where the line is bisected. So the idea is to divide the line exactly in half. Extending the line would just make it longer, rotating it changes its direction, and reflecting across a line is a symmetry action that creates a mirror image rather than dividing the line into halves. The key is that the two pieces are equal in length.

Bisecting a line means cutting it into two equal parts. When a point lies on a line segment and creates two segments with the same length, that point is the midpoint, the place where the line is bisected. So the idea is to divide the line exactly in half. Extending the line would just make it longer, rotating it changes its direction, and reflecting across a line is a symmetry action that creates a mirror image rather than dividing the line into halves. The key is that the two pieces are equal in length.