In life, what graphics are translational?
Conveyor belts, elevators and their contents, elevators and people on elevators, flags on flagpoles, straight cars
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- 1. Where do you use bar charts in your life
- 2. Xiao Ming participated in the survival summer camp organized by the school (in the northern hemisphere), and learned a lot of knowledge and skills about survival in the wild. He can use the shadow to distinguish the direction. As shown in the picture As shown in Figure 6, around noon, draw the running track of the shadow on the top of the vertical bar on the ground with the method of tracing points, find out the point a nearest to o, and OA will indicate_________ (choose "North-South" or "East-West") direction____________________________ ; Tell me how to do it I know the answer, but I don't know how to solve it
- 3. In the process of translation, the line segments connected by the corresponding points can only be parallel, not on the same line?
- 4. Translation: after translation, () parallel or () equal, () equal, () the connected line segments are parallel and equal. Translation transformation does not change the shape, size and direction of graphics
- 5. After translation, the graph corresponds to the line segment of the original graph, and the 〔〕 and 〕 of the 〕 graph do not change
- 6. After the figure is rotated, the position changes and the size remains unchanged
- 7. A figure is rotated 180 ° and the shape and size of the rotated figure are compared with that of the original figure (), but the upper and lower relations () are filled in brackets unchanged
- 8. After a figure rotates, its position changes and its shape remains unchanged. Is that right?
- 9. After a figure is enlarged or reduced, although the length of each side changes, the shape of the figure does not change
- 10. When the object or figure is translated, the position () size and direction (). A does not change, B changes, C cannot be determined
- 11. What is the use of graphics in life?
- 12. Knowledge or phenomenon of enlarging or reducing figures in life A little more, just tonight
- 13. How to draw a graph by rotating 90 degrees around a point outside the graph
- 14. How to draw a picture around the outer point O of the figure?
- 15. How to do the rotation of graphics? General steps for drawing
- 16. The drawing method and thinking of mathematics rotation figure in grade three of junior high school
- 17. How do you want to rotate a figure with a point in the triangle,
- 18. To measure the diameter of a small hole on a steel plate, an indirect measurement method is usually used. If a standard steel ball with a diameter of 10 mm is placed on the small hole, the distance between the top of the steel ball and the plane of the small hole H = 8 & nbsp; mm (as shown in the figure), and the diameter D of the small hole is calculated
- 19. As shown in the figure, in rectangular ABCD, be bisects ∠ ABC intersects ad at point E. if ∠ EBO = 15 °, calculate the degree of ∠ AOE
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