Could a translation error lead to squares to not be considered as rectangles? (Cantonese)

Question

I'm reading a certain set of kindergarten/lower primary maths textbooks that is written by North American authors for an Asian company.

Whenever students are asked to identify the number of rectangles in a given picture, the answer booklet gives the number of oblongs instead of the number of rectangles.

For example

[picture with 4 circles, 2 triangles, 3 square rectangles, 2 oblong rectangles for a total of 5 rectangles]

Circle ___

Triangle ___

Square ___

Rectangle ___

The answer key would give only the numbers:

4

2

3

2

So, the last line is wrong since it should be 5.

Could this happen in Cantonese? I mean, is there something specific about the translations of any of the following words 'rectangle, square, oblong, quadrilateral, quadrangle, parallelogram, trapezoid/trapezium, rhombus' that would cause such confusion? I guess the translator/s thought that when English speakers say 'rectangle', it means 'oblong in their language/dialect, but I don't see that as specifically a

By the way, are squares considered rectangles in China, Hong Kong and Macau? Apparently, these things can vary by state, curricula, culture, time, etc. Please provide a document from the education department of your government or something.

Related:

In Korea, are squares considered rectangles?

Are kindergartners supposed to be steered from squares being rectangles?

In what curricula are “rectangles” defined so as to exclude squares?

Why do we have circles for ellipses, squares for rectangles but nothing for triangles?

What are/should kids (be) taught about the colour of the sun?

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Edit: 1. Is Cantonese the same as Mandarin in this regard? 2. I'm also asking about Hong Kong and Macau in addition to the parts of China outside Hong Kong and Macau

Answer 1

If there is a real question here, I think it stems from your idiosyncratic usage of the words "square rectangle" and "oblong rectangle". In more common usage, as you would no doubt find in dictionaries and geometry books, your "square rectangle" is a square 正方形, and your "oblong rectangle" is a rectangle 長方形. If you are willing to accept this common usage, there is no error in the books you are referring to.