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math not my best subject need help

math not my best subject need help

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Old 06-29-2011, 08:06 AM
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I maybe trying to do the impossible .i want a 2 1/2 inch finish square using triangles.. what size would i have to cut my triangles..the 2 1/2 square includes the 1/4 in. seam..I have been trying to do this all morning and it's not coming out. I want the square to look like a diamond in between the sashing..unless there is an easier way to do it other then triangles..
Thank You in and advance..
Loretta.. :-(
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Old 06-29-2011, 08:40 AM
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Not 100% sure what you are asking. Do you want a pieced cornerstone with a square set on point, so it would look like a diamond?
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Old 06-29-2011, 08:46 AM
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yes i think so..not sure of the name.
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Old 06-29-2011, 08:47 AM
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like a square in a square?
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Old 06-29-2011, 08:52 AM
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yes ma'am
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Old 06-29-2011, 08:52 AM
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are you talking about like a sqaure in a square. Put the square on point and cut the other squares to sew on each side.
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Old 06-29-2011, 08:54 AM
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Are you asking how to do something like "A"

If "A" is what you are trying to do, the squares need to be a "couple of threads" larger than 2.25 inches (cut size)

The actual size is the ((square root of 3.125) plus 1/2))
(1.768 + 0.500 = 2.268)

For the triangles on the sides - I would cut squares 2.25 inches (which is a bit over sized) - cut them in half diagonally - sew them on the square - and then trim the square in a square unit to 3 inches - which should end up being 2.5 inches "finished" size

(I think the math is correct - feel free to "do it right" if it's incorrect.)
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Old 06-29-2011, 09:02 AM
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yes like A thank you I dont have a scanner so couldn't send a pic. and camera isn't charged
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Old 06-29-2011, 09:11 AM
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Please do only ONE to see if the math is right :? before cutting out a lot of pieces.
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Old 06-29-2011, 09:29 AM
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thank you, thank you, thank you bearisgray that's what i needed. I was allowing for 1 size not all sides. thank you again so much..now i need to make 42 of these. Again thank you so much
Loretta
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