Referenced from lesson Contracts (Spring, 2021)
Use the contracts to write expressions to generate images similar to those pictured.
ellipse:: Number, Number, String, String -> Image
What changes with the first number? |
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What about the shape changes with the second Number? |
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Write an expression using ellipse to produce a circle. |
regular-polygon:: Number, Number, String, String -> Image
What changes with the first Number? |
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What about the shape changes with the second Number? |
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Use regular-polygon to write an expression for a square! |
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How would you describe a regular polygon to a friend? |
These materials were developed partly through support of the National Science Foundation,
(awards 1042210, 1535276, 1648684, and 1738598). 
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