## Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community!

### Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

# can't solve challenge 2 of 2

Use the syntactic sugar just learned about to convert the Scale method to a single line method. Important: In each task of this code challenge, the code you write should be added to the code from the previous task. Restart Preview Get Help Check Work Square.cs Polygon.cs

1 namespace Treehouse.CodeChallenges 2 { 3 class Square : Polygon 4 { 5 public double SideLength { get; private set; } 6 ā 7 public double Area => SideLength * SideLength; 8

9 public Square(double sideLength) : base(4) 10 { 11 SideLength = sideLength; 12 } 13

14 public void Scale(double factor) 15 { 16 SideLength *= factor; 17 } 18 } 19 } 20 ā

Square.cs
```namespace Treehouse.CodeChallenges
{
class Square : Polygon
{
public double SideLength { get; private set; }

public double Area => SideLength * SideLength;

public Square(double sideLength) : base(4)
{
SideLength = sideLength;
}

public void Scale(double factor)
{
SideLength *= factor;
}
}
}
```
Polygon.cs
```namespace Treehouse.CodeChallenges
{
class Polygon
{
public int NumSides { get; private set; }

public Polygon(int numSides)
{
NumSides = numSides;
}
}
}
```

## just do what you did in step 1 again.

It's basically just replacing the first brace with "`=>`" and removing the second brace.

There's a good example of this at about time index 01:58 of the Expression Bodied Members video.

I tried this step and I got this error

"Did you convert the method to a single-lined, expression bodied method?"

Is there a new Move method we need to change for the task, thanks!

namespace Treehouse.CodeChallenges { class Square : Polygon { public double SideLength { get; private set; }

```    public double Area => SideLength * SideLength;

public Square(double sideLength) : base(4)
{
SideLength = sideLength;
}

public void Scale(double factor)
{
SideLength *= factor;
}
}
```

}

thanks steven