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PostPosted: Tue Sep 11, 2012 11:36 am 
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The question is in GL assessment paper 5, q 38

Bulu has 2D shape.

All of its sides are the same length

Which of these cannot be Bulu's shape?

a right angled triangle

an equilateral triangle

a square

a rectangle

a parallelogram


Any help will be usefull with explanantion? Thanks


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PostPosted: Tue Sep 11, 2012 11:45 am 
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This has been asked and answered before - see here: viewtopic.php?f=2&t=27047


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PostPosted: Tue Sep 11, 2012 12:29 pm 
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Thanks,

Had a look, right answer on the book is right-angle triangle.

But the answer could be the rectangle or parallelogram also.

ie. the question seems to be wrongly worded, i agree right angle triangle will always have one different side.

Many thanks.


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PostPosted: Tue Sep 11, 2012 12:42 pm 
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The question is "Which of these cannot be Bulu's shape?" A right angled trinagle is the only one which COULD NOT have all sides equal as rectangles and parallelograms could have 4 equal sides too even if they usually don't. Squares are a subset of rectangles, which in turn are a subset of parallelograms - so a square is actually an example of a square, a rectangle and a parallelogram all at the same time.


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PostPosted: Tue Sep 11, 2012 1:19 pm 
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Thankyou,

Question confuses, as it says: All its sides are the same length?

Thanks for the explanation though, now I will try and explain a 10 year old this fact!

:)


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