Open the Table Functions Starter File on your computer, save a copy, and click "Run".
1 What is the name of the Table defined on line 5?
2 How many columns does it have?
3 What is the name of the Row defined on line 17?
4 Is red-circle a Number, String, Image, Boolean, Table, or Row?
5 Type red-circle into the Interactions Area. What do you get?
6 In the space provided on lines 19 and 20, add new definitions for two more Rows from this table.
7 A Contract for a function is written on line 22. What is its name?
8 What is its Domain?
9 What is its Range?
10 What other functions are defined in the starter file?
11 Use the function is-red, passing in a Row. For example, type is-red(blue-triangle). What do you get?
12 What does the is-red function do?
For the remaining functions, read the code and try to guess what it does before testing it out by passing in a Row.
13 What does is-polygon do?
14 What does lookup-name do?
15 What does is-triangle do?
16 Define two new functions: is-green and is-blue.
★ There is a hidden function called draw-shape. What is its Domain and Range? What does it do?
★ Is there another way to define is-polygon, so that it doesn’t use the "polygon" column at all?
These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, 1738598, 2031479, and 1501927). 
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