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sales value over $15, successful order, no more than $15, order will be cancelled. 

What's that reason for cancelling? Automatic default buyer asked to cancel.

For example, to buy 10 triangles for a total of $5, the order will be cancelled. Because of the free shipping, the sales amount is only $5, which is not enough for the shipping fee, so please understand.

I have specific dimensions for each image, you can convert lengths from centimeters to inches using the url below. 

https://www.rapidtables.com/convert/length/cm-to-inch.html

RANDOM COLOR.

total 40 Pieces,    including 16 triangles and 24 squares