A seven prism has several vertices, several edges and several faces. What is the shape of the bottom
A seven prism has 14 vertices, 21 edges, 9 faces, and the shape of its bottom is a seven sided shape
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- 1. The observation prism has 5 faces, 6 vertices and 9 edges. The quadrangular prism has 6 faces, 8 vertices and 12 edges. The pentagonal prism has 7 faces, 10 vertices and 12 edges It can be inferred that how many faces does the nth prism have? How many edges? How many vertices?
- 2. How many edges and vertices does a regular octahedron have Be more detailed What if there were more
- 3. Does an octahedron have six faces, eight vertices and twelve edges
- 4. 1. A cube has eight vertices, each of which has () edges, all of which are () Is there () edges of a pentaprism? A. Five B. ten C. fifteen D. twelve
- 5. Mother bought 3 pots of roses and 2 pots of Mimosa, which cost 27 yuan in total. A pot of roses is 6.5 yuan more expensive than a pot of Mimosa. How much are each pot of roses and Mimosa?
- 6. 1+2+3+4+5+6+7+8+9+10+11…… +What is 49 + 50
- 7. If two numbers are multiplied, if one factor increases by 0.6, the product increases by 4.8; if the other factor decreases by 0.3, the product decreases by 1.8 I didn't learn X
- 8. From 1, 2, 3 How many of these 49 natural numbers can be taken out to make the sum of the two numbers 50?
- 9. There are three groups of numbers: (1) 1, 2, 3; (2) 0.5, 1.5, 2.5, 3.5; (3) 4, 5, 6. If one number is taken from each group and multiplied, then all of them have There are three groups of numbers: what is the sum of the products of all the three numbers in different ways?
- 10. 0.5 multiplied by a number The product is three decimal places, and the integral part of the product is 1. If you use the "rounding" method to get the approximate value, if you keep the integer, the product is 2; if you keep one decimal place, the product is 2.0; if you keep two decimal places, the product is 2.00. Find this number. It's better to answer before 9 o'clock tonight, please as soon as possible
- 11. After the 8 vertices of a cube are cut off, a new geometry is obtained, which has a number of advantages______ Two noodles______ Two vertices______ The edge of the bar
- 12. An n-cube has () vertices and () edges
- 13. What is 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 +... + 10000
- 14. What is 1.25 times 2 / 3 times 0.8? What is 1 / 2 plus 1 / 3 times 1 / 2 plus 1 / 3?
- 15. Proof of the sum formula of the first n terms of the equal ratio sequence When q = 1 Suppose A1 = 1, n = 2 Sum of the first n terms = 1 + 2 = 3 So the formula Sn = A1 * n is wrong I read fast, and mixed the equal difference with the equal ratio,
- 16. 1 + 3 + 5 + 7 +. + 2007 = the square of a few
- 17. 1+3+5+7+9+…… +Is (2n-1) the square of N
- 18. When n = 0,1,2,3, the nth power of 2
- 19. Fill in the number according to the rule: 1, 5, 9, 13, 17___ , ___ ,… The nth number is___ .
- 20. There is such a series of numbers 1,2,5,6,9,10. Please give the general formula