nativetexan

I was in keepsake quilting and looked at kits. one was Give It A Whirl and came with a video. she started with ten inch pieces, placed two together and sewed all around the edges. then cut X across to make hst's. then she trimmed each hst to 6 1/2 inches. how did she get four 6 1/2 inch from ten inch cuts of fabric? must have been larger. i just can't see it if not. she then adds strips so each one is 8 1/2 and four together makes 16 inch blocks. anyone made this? OK< my lovely son said it's because the cuts are across the corners. makes each cut and sewn hst larger. my poor brain is going to bed. i know he's right but still, such a simple thing and it eluded me! nighty night