Answer:
B) A reflection over L maps point C to point A and maps point D to itself. Reflections preserve distances, so D must be equidistant from A and C.
Explanation:
We are given the following information:
- Line
is the perpendicular bisector of segment
. This means that line
passes through the midpoint of segment
, and it is perpendicular to
, splitting
into two equal parts. - D is any point on line
.
We want to prove that point D is equidistant from points A and C, which means that the distance from D to A is the same as the distance from D to C. To do this, we can consider a reflection over line
.
When we perform a reflection over a line, it transforms objects on one side of the line to corresponding objects on the other side of the line while preserving distances along the line of reflection.
So, when we perform a reflection over line
:
- Point C is mapped to point A.
- Point D remains where it is.
Now, since reflections preserve distances along the line of reflection, the distance from D to A must be the same as the distance from D to C. In other words, D is equidistant from A and C.
Therefore, the correct answer is option B:
- A reflection over
maps point C to point A and maps point D to itself. Reflections preserve distances, so D must be equidistant from A and C.
To summarize, line
is the perpendicular bisector of segment
. When we reflect over line
, it swaps the positions of A and C while keeping point D in its place. Since reflections preserve distances, D must be equidistant from the new positions of A and C, which are the same as the original positions of A and C. Therefore, D is equidistant from A and C.