Question

look at this shape: which image shows a reflection? a b c

Explanation:

Step1: Recall reflection property

In a reflection, the shape is flipped over a line of reflection. The distance of each point on the original shape from the line of reflection is the same as the distance of its corresponding point on the reflected - shape from the line of reflection. Also, the orientation of the shape changes (left - right or up - down are reversed).

Step2: Analyze option A

Option A shows a rotation of the original triangle, not a reflection. The orientation of the triangle has changed in a rotational manner rather than a flipped - over manner.

Step3: Analyze option B

Option B shows a reflection. If we consider a vertical line of reflection (for example), each point on the original triangle has a corresponding point on the new triangle at the same distance from the line of reflection, and the left - right orientation is reversed.

Step4: Analyze option C

Option C shows a translation of the original triangle. The triangle has just been moved to a new position without any flipping or rotation.

Answer:

B.