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Geometry Difficulty 2.6 Junior Find the answer Canada

Triangle $T$ is reflected once.

Which of the following triangles cannot be this reflection of triangle $T$ ?

Figure for this problem

Pick one

Solution

Each of the following four diagrams shows the image of triangle $T$ after its reflection in the dotted line.

Thus, each of the triangles labelled $A, B, D,$ and $E$ is a single reflection of triangle $T$ in some line.

The triangle labelled $C$ is the only triangle that cannot be a reflection of triangle $T$ .

Figure for this problem

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.