Math problems about quadrilateral in the second grade of primary school
1, the opposite side of the rectangle (), and all four corners are (). 2. The sides of a square are all equal, and all four corners are ().
3. The sum of the length of a closed graph is its ().
4. The perimeter of the square must be known (), and the perimeter of the rectangle must be known () and (). The perimeter of a square = (), and the perimeter of a rectangle = ().
The side length of a square is 5cm, and the circumference is () cm.
6. The circumference of a rectangle 30 meters long and 20 meters wide is () meters.
7. There is a rectangular garden in xinhua primary school, which is 8 meters long and 5 meters wide. There should be a fence around. How long is the fence?
8. The length of the rectangle is 30 cm, the width is 10 cm, and the circumference is () cm.
9. The side length of a square is 25dm, and the circumference is () meters.
10, the length of the school playground runway is 400 meters. Xiaoming ran three times and he ran ().
1 1. Fold a 48 cm iron wire into a square with a side length of () cm.
12, the length of the rectangle is 6 decimeters, the width is half of the length, and the circumference is ().
13, put two small squares with a side length of 3cm into a rectangle, and the circumference of this rectangle is ().
14, square flower bed, side length15m. What's its circumference?
15. An ant crawls along the edge of a rectangle with a length of 15 cm and a width of 10 cm. How many centimeters does it have to climb to get back to the starting point?
16, a rectangular vegetable field, 6 meters long and 5 meters wide, surrounded by walls, one of which is against the wall. How long is the fence at least?
17. Put two rectangles 5 cm long and 3 cm wide into a big rectangle. What is the circumference of this rectangle?
18, with a rectangle, 70 cm long and 50 cm wide. If a square is cut into one, what is its circumference?
19, a rectangular vegetable field, 6 meters long and 3 meters wide, surrounded by fences. How long is the fence? If one side is against the wall, how many meters should the fence be at least?
20. A rectangular garden is 27 meters long, and its width is 4 meters less than its length. A fence should be planted around this garden. How long is the fence?
Math problems about quadrilateral in the second grade of primary school
A parallelogram has () sides, () corners, an opposite side () and a diagonal (). Second, think about it and fill it out.
Swing a triangle requires at least () sticks; Put a quadrilateral with at least () sticks; Put two triangles with at least () sticks; It takes at least () sticks to swing two quadrangles.
Third, cut.
(1) Cut a triangle on a square piece of paper. There are () kinds of incisions. What figures are left?
(2) Cut a triangle on a piece of triangular paper. There are () kinds of cutting methods. What figures are left?
Fourth, the judgment question.
1, and the opposite sides of the parallelogram are equal. ()
2. The diagonals of parallelograms are equal. ()
3. The figure surrounded by four sides is a parallelogram. ()
4. Rectangle is a special parallelogram and square is a special rectangle. ()
5. Two identical trapezoids can be combined into a parallelogram. ()
Math problems about quadrilateral in the third grade of primary school
Fill in the blanks. 1, the circumference of a square with a side length of 2 cm is () cm.
2. The rectangle is 6 cm long, 2 cm wide and () cm in circumference.
The circumference of a square is 20cm, and the side length is () cm.
4. The circumference of the rectangle is16cm, the length is 6cm, and the width is () cm.
Second, solve the problem.
1. Fence A vegetable field with a length of 28 meters and a width of 22 meters. How long is the fence?
Mom wants to embroider a circle of lace on a piece of white cloth with a side length of 20 decimeters. How long is lace? How many meters?
3. Rectangular lawn is16m long and14m wide. There is a cement road around the lawn. How long is the cement road at least?
Xiaoming ran five times around a vegetable field with a side length of 20 meters. How many meters did he run?
5. Form a square with a line with a length of 16 cm. How long are the sides of this square? If a 3 cm wide rectangle is surrounded by the same wire, how long is the rectangle?
6. Make a big square with four small squares with a side length of 2 cm. What is the circumference of this big square?