Question

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

Explanation:

Step1: Understand Reflection

A reflection (or flip) is a transformation that creates a mirror image of a shape across a line (like a mirror). The original triangle has a right angle at the bottom - left, with the vertical leg on the left and horizontal leg at the bottom.

Step2: Analyze Option A

Option A looks like a translation (slide) of the original triangle, as it has the same orientation (vertical leg on the left, horizontal leg at the bottom) and just moved down.

Step3: Analyze Option B

Option B looks like a rotation (turned) of the original triangle, as the orientation of the legs is different from the original and a reflection.

Step4: Analyze Option C

Option C has the triangle with the vertical leg on the right and horizontal leg at the bottom, which is a mirror image of the original triangle (if we reflect over a vertical line through the middle of the grid, the left - side vertical leg of the original would become a right - side vertical leg in the reflection). So it shows a reflection.

Answer:

C. The triangle in option C is a mirror image (reflection) of the original triangle, while A is a translation and B is a rotation.