Tag Archives: complete the quadrilaterals

Don Steward’s Complete the Quadrilateral

This activity is from Don Steward’s post Complete the Quadrilateral. I’ve only learned of Don’s MEDIAN site more recently, and it’s a treasure trove because nearly every post can be an instant lesson in itself. Thank you! I like this set of 24 problems a lot, but when I click on the image of the problem in his post, I […]

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