9. Начерти квадрат со стороной 4 см. Раздели его 2 равных прямоугольника и закрась один из
них красным цветом. Другой прямоугольник раз-
дели на 2 равных квадрата и закрась один из
них синим цветом. Другой квадрат раздели на
2 равных треугольника и закрась один из них
зелёным цветом. Какая доля большого квадрата
осталась незакрашенной?

На
и​

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Пошаговое объяснение:

1 восьмая если Я так поняла

To solve this problem, let's break it down step by step:

1. Draw a square with sides measuring 4 cm. Make sure all sides are equal in length.

2. Divide the square into 2 equal rectangles. To do this, draw a line from one corner of the square to the opposite corner, dividing it into two equal triangles. Then, draw another line parallel to one of the sides of the square, connecting the two vertices of the triangles.

3. Choose one of the rectangles and color it red. Use a red colored pencil or marker to fill in the entire rectangle.

4. Take the other rectangle and divide it into 2 equal squares. To do this, draw a line from one corner of the rectangle to the opposite corner, dividing it into two equal triangles. Then, draw another line parallel to one of the sides of the rectangle, connecting the two vertices of the triangles.

5. Choose one of the squares and color it blue. Use a blue colored pencil or marker to fill in the entire square.

6. Take the remaining square and divide it into 2 equal triangles. To do this, draw a line from one corner of the square to the middle point of the opposite side, dividing it into two equal triangles.

7. Choose one of the triangles and color it green. Use a green colored pencil or marker to fill in the entire triangle.

8. Now, examine the remaining portion of the big square that is not colored. This is the part that we need to find the fraction of.

9. Count the number of smaller squares that make up the big square. In this case, there are 16 small squares.

10. Count the number of colored squares and triangles. In this case, there are 3 colored squares and triangles.

11. Subtract the number of colored squares and triangles from the total number of squares. 16 - 3 = 13.

12. The fraction that represents the remaining portion of the big square is 13/16. This means that 13 out of the 16 squares are not colored.

So, the answer is that the remaining fraction of the big square that is not colored is 13/16.