Which term describes a transformation that flips a figure over a line?

Which term describes a transformation that flips a figure over a line?

• A. Translations
• B. Reflections
• C. Dilation
• D. Rotations

Answer: (B)

The main concept is flipping a figure across a line, which is called a reflection. In a reflection, the line acts like a mirror: every point of the figure has a corresponding point on the opposite side of the line at the same distance from the line, and the segment joining each point to its image is perpendicular to the line and is bisected by it. The image is the same size and shape as the original, but it’s mirrored, with the orientation reversed. This is different from translations, which slide the figure without flipping, dilations, which change size, and rotations, which turn the figure around a point.

The main concept is flipping a figure across a line, which is called a reflection. In a reflection, the line acts like a mirror: every point of the figure has a corresponding point on the opposite side of the line at the same distance from the line, and the segment joining each point to its image is perpendicular to the line and is bisected by it. The image is the same size and shape as the original, but it’s mirrored, with the orientation reversed. This is different from translations, which slide the figure without flipping, dilations, which change size, and rotations, which turn the figure around a point.