Color the shapes in the picture using the color key.

Problem Description:

The task involves coloring a picture of a house and its surroundings using a provided Color Key. The Color Key specifies which shapes should be colored in specific colors. Here is the breakdown:

- Green: Circles
- Red: Squares
- Blue: Triangles
- Brown: Rectangles

Solution Explanation:

1. Identify Shapes in the Picture:
- Look at the image and identify all the shapes present.
- The shapes include circles, squares, triangles, and rectangles.

2. Apply the Color Key:
- Use the Color Key to determine which color corresponds to each shape.
- Circles should be colored green.
- Squares should be colored red.
- Triangles should be colored blue.
- Rectangles should be colored brown.

3. Color Each Shape Accordingly:
- Circles: There are two circular shapes in the image (one near the house and one on the flagpole). These should be colored green.
- Squares: There are no squares visible in the image. If there were any, they would be colored red.
- Triangles: There is one triangular shape (the roof of the house and the flag). These should be colored blue.
- Rectangles: There are several rectangular shapes (the main body of the house, the door, and the windows). These should be colored brown.

4. Final Coloring:
- Green: Color all circles green.
- Blue: Color all triangles blue.
- Brown: Color all rectangles brown.
- Since there are no squares in the image, no red color is needed.

Final Answer:

- Circles: Green
- Triangles: Blue
- Rectangles: Brown
- Squares: None (no red needed)

By following these steps, the image will be correctly colored according to the Color Key.

Final Answer:
\boxed{\text{Circles: Green, Triangles: Blue, Rectangles: Brown}}