In this context, a shape similar to a right triangle would be another triangle. The term "similar" in geometry means two shapes that have the same shape but not necessarily the same size. Both triangles would have corresponding angles that are congruent and sides that are proportional.

Since the question suggests a comparison with a right triangle, the answer is likely:

• triangle (option given)

Would you like more details on similar triangles?

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Here are five related questions to explore further:

1. What are the criteria for two triangles to be similar?
2. How do you calculate the proportions between similar triangles?
3. Can all right triangles be considered similar to one another?
4. How does the Pythagorean theorem apply to right triangles?
5. How do you determine the scale factor between two similar triangles?

Tip: Similar triangles always have corresponding angles equal and sides proportional.