Question

Can anyone please help me with my geometry worksheet??

Answer 1

@amistre64 can you help when you get a chance?

Answer 2

a set of claws ...

Answer 3

euclids formula ... V+F = E+2 should help

Answer 4

or is that Eulers formula? i get those dead guys names mixed up

Answer 5

define a vertex, an edge, and a face for me ... lets make sure your up to speed on the terminology

Answer 6

yeah the one i need is eulers formula

Answer 7

I think it's Euler's formula.

Answer 8

and okay

Answer 9

vertex is the highest point. an edge is a line segment(?) that joins two vertices and a face is the flat surface??

Answer 10

Euler is pronounced: oiler, but i tend to say you-ler

Answer 11

vertex is a point, doesnt need to be the highest point .. and the rest look fine as well

Answer 12

so the formula we want to use is simply:

#vertex + #faces = #edges + 2

Answer 13

and i think problems 1and 2 are jsut counting stuff

Answer 14

so for #1 would it be 6 vertices 6 edges and 6 faces??

Answer 15

idk if i count the flat bottom part or not

Answer 16

the bottom counts since its part of the shape

Answer 17

6 verts and 6 faces is good, but i see 6 edges going up and 5 edges round the bottom for a total edge count of 6+5

Answer 18

lol, fine, 5 up and 5 around ..

Answer 19

yeah i just recounted and i see 10 too now

Answer 20

for number 2 would it be 8 vertices, 5 faces, and 12 edges?

Answer 21

so, if we want to test the forumla:

6vert + 6face = 10edge + 2

12 = 12 is great

Answer 22

#2 is a cube thats been sat on .... 6 faces, 8 verts, and 12 edges

Answer 23

oh yeah oops wow i keep messing up COUNTING jeez

Answer 24

2D drawing of 3D objects are always a pain to try to abstract them out in your mind

Answer 25

yeah it mixes me up a lot haha. okay now what was the formula for the second part again?

Answer 26

V+F = E+2 which can be switched about to say:

F -E +V = 2, to match how they wrote their information

Answer 27

okayy h.o

Answer 28

the first one is 6?

Answer 29

yep

Answer 30

one idea may be to just right +2 by all the edges and make V+F = E+2 but those are just methods to organiize data .... whatevers easiest for you

Answer 31

number 4 is 21. number 5 is 26. number 6 is 10 and number 7 is 12. right? @amistre64

Answer 32

10+V = 18+2

10+V = 20, im going to say no for number 5

7 seems fine, 6 is iffy to me as well

Answer 33

16+E = 24+2

16+E = 26 .... im liking 6 better lol

Answer 34

so 5 is 10. and 6 is right?

Answer 35

@amistre64

Answer 36

5 is 10, and 6 is 10 so yeah :)

Answer 37

okayyy now how do i do the last 2... cause it doesnt give me any numbers

Answer 38

you need to flatten out the objects ... make maps

Answer 39

not too sure how to approach the solution they want tho. pretty sure its just counting again

Answer 40

this is hard LOL :(

Answer 41

9 is just another odd cube ....



now we can see all the faces, edges, and corners in 2D instead of trying to abstract them into 3D