Put the diamond in the square, please use the translation method to design the pattern, and draw it below  

Put the diamond in the square, please use the translation method to design the pattern, and draw it below  


Let's move the diamond to the right, and then come out with a pattern



Divide an equilateral triangle into four triangles with equal area in three ways. Please send the picture. Thank you!





As shown in the figure, the length of each side of △ ABC is 24cm. Use the line segment shown in the figure to divide the triangle into four triangles with equal area, and find the sum of the lengths of the line segments CE and & nbsp; CF


According to the question stem, we can get: the area of △ abd = △ BDE = △ def = △ EFC, (1) the area ratio of △ abd and △ BDC is 1:3, according to the property that the area is proportional to the bottom when the height of the triangle is one, we can get: AD: DC = 1:3; because AC = 24 cm, we can get CD = 24 × 34 = 18 (CM); (2) the area ratio of △ def and △ DFC is 1:1, according to the triangle When the height of the triangle is 1:1, the area is proportional to the bottom. Because DC = 18 cm, CF = 18 × 12 = 9 (CM); (3) the area ratio of △ BDE and △ EDC is 1:2. According to the height of the triangle, the area is proportional to the bottom. Be: EC = 1:2; because BC = 24 cm, CE = 24 × 23 = 16 (CM); 9 + 16 = 25 (CM), A: the total length of CF and CE is 25cm



It is known that the length of each side of △ ABC in the figure is 96cm. The triangle is divided into four triangles with equal area by broken line, then the sum of the lengths of the segments CE and CF is______ cm.


According to the question stem, we can get: the area ratio of △ abd = △ BDE = △ def = △ EFC (1) △ abd and △ BDC is 1:3, according to the property that the area is proportional to the bottom when the height of the triangle is one, we can get: AD: DC = 1:3; because AC = 96 cm, we can get CD = 96 × 34 = 72 cm; (2) the area ratio of △ def and △ efc



The side length of equilateral triangle ABC is 90cm, and the triangle is divided into four triangles with equal area by broken line. Then, what is the sum of the lengths of CE and CF?


According to the question stem, we can get: the area ratio of △ abd = △ BDE = △ def = △ EFC (1) △ abd and △ BDC is 1:3, according to the property that the area is proportional to the bottom when the height of the triangle is one, we can get: AD: DC = 1:3; because AC = 90 cm, we can get CD = 90 × 34 = 67.5 cm; (2) the area of △ def and △ DFC



In triangle ABC, D is the midpoint of AB, ab = 10, triangle ABC turns around point a, how long does point d pass through, and how much area does DB pass through


AD=5
D = 2 π * ad = 10 π
The area of DB is a circle, which is = π * AB ^ 2 - π * ad ^ 2
=75π



In triangle ABC, the length of DB is three times that of AD. if the area of triangle CAD is 20 square meters, what is the area of triangle CDB


In the triangle ABC, if CF is higher on the side of AB through C, then the triangle CDB and the triangle ADC share the same height, and there is a straight line between a, D and B, DB = 3aD, so the triangle ADC with triangle CDB = 3 times is 3 times 20 = 60



As shown in the figure, the length of each side of △ ABC is 24cm. Use the line segment shown in the figure to divide the triangle into four triangles with equal area, and find the sum of the lengths of the line segments CE and & nbsp; CF


According to the question stem, we can get: the area of △ abd = △ BDE = △ def = △ EFC, (1) the area ratio of △ abd and △ BDC is 1:3, according to the property that the area is proportional to the bottom when the height of the triangle is one, we can get: AD: DC = 1:3; because AC = 24 cm, we can get CD = 24 × 34 = 18 (CM); (2) the area ratio of △ def and △ DFC is 1:1, according to the triangle When the height of the triangle is 1:1, the area is proportional to the bottom. Because DC = 18 cm, CF = 18 × 12 = 9 (CM); (3) the area ratio of △ BDE and △ EDC is 1:2. According to the height of the triangle, the area is proportional to the bottom. Be: EC = 1:2; because BC = 24 cm, CE = 24 × 23 = 16 (CM); 9 + 16 = 25 (CM), A: the total length of CF and CE is 25cm



The following is a 1:1000 scale vegetable plot plan, calculate its actual area
Upper sole: 2cm, lower sole: 2.5cm,


Actual length of upper sole: 2 △ 1 / 1000 = 2000cm = 20m
Actual length of bottom: 2.5 △ 1 / 1000 = 2500cm = 25m
Actual height: 2 △ 1 / 1000 = 2000cm = 20m
Actual area: (20 + 25) × 20 △ 2
=45×20÷2
= 450 square meters



The figure below is a plan drawn on a scale of 1:1000. Please calculate its area


2 * 3 / 2 * 1000 * 1000 = 3000000 square centimeter = 300 square meter