Type Aliases and Interfaces
Give a shape a name with type or interface so you can reuse it. They do almost the same job for objects.
Exampletypescript
Interfaces can extend other interfaces to add properties.
Exampletypescript
Quick check
How does an interface reuse another interface's properties?
Your turn: write the code
Define an interface Point with x and y numbers, create p at (3, 4), and print p.x * p.y.
Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.
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