Question

look at this shape: image of a triangle on a grid which image shows a reflection? images of triangles labeled a, b, c on grids a b c

Explanation:

Step1: Recall reflection definition

A reflection (mirror image) flips a shape over a line, so corresponding points are equidistant from the line of reflection, and the shape is a mirror - reversed version of the original.

Step2: Analyze Option A

Option A's triangle does not appear to be a mirror - reversed version of the original triangle. The orientation and the relative positions of the vertices do not match the reflection property.

Step3: Analyze Option B

Option B's triangle is a mirror - reversed version of the original triangle. If we imagine a vertical or horizontal line of reflection (depending on the grid), the triangle in B has the vertices in positions that are mirror - images of the original triangle's vertices.

Step4: Analyze Option C

Option C's triangle looks like a translation (a slide) of the original triangle, not a reflection, as the orientation and the relative positions of the vertices are the same as the original, just shifted.

Answer:

B