| [Visitor (112.0.*.*)]answers [Chinese ] | Time :2023-05-29 | | Each pyramid angle is not exactly the same, but very close. Data from the pyramid of Khufu: slope to the ground 51 degrees 50 minutes 09 seconds; The angle of the base of the triangle itself: 58 degrees, 17 minutes and 15 seconds. As long as you follow this angle, you can make a model no matter how long the bottom edge is. The bottom of the model must be square, but if you have four triangles, this bottom can also be made without actually making, and the four isosceles triangles with a base angle of 58 degrees, 17 minutes and 15 seconds must be a standard pyramid shape. Of course, you can use a carton, but the angle of the carton is difficult to accurate, and it may be more accurate and beautiful if you use a hard plastic sheet. |
|
