Referenced from lesson Contracts

1 What kind of triangle does the triangle function produce?

There are lots of other kinds of triangles! And WeScheme has lots of other functions that make triangles!

triangle:: (size:: Number, style :: String, color :: String) -> Image

right-triangle:: (base::Number, height::Number, style::String, color::String) -> Image

isosceles-triangle:: (leg::Number, angle::Number, style::String, color::String) -> Image

2 Why do you think triangle only needs one number, while right-triangle and isosceles-triangle need two numbers and triangle/sas needs three?

3 Write right-triangle expressions for the images below. One argument for each should be 100.

4 What do you think the numbers in right-triangle represent?

5 Write isosceles-triangle expressions for the images below. 1 argument for each should be 100.

6 What do you think the numbers in isosceles-triangle represent?

7 Write 2 expressions that would build right-isosceles triangles. Use right-triangle for one expression and isosceles-triangle for the other expression.

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