Question

can you satisfy me that how the triangular prism has 9 edges please
and a cone has 1 edge?

Answer 1

well just draw then, or use google images... and search for them

Answer 2

for the prism uses euler

faces + edges = vertices + 2

Answer 3

ok if edge means the way where two surfaces meet then in cone there is 1 edge and in triangluar prism how can we say that 5 faces or surfaces meeting to make 9 edges

Answer 4

edge is the line where two faces meet right ?
and, each face has 4 sides

Answer 5

ofcourse triangle has 3 sides

Answer 6

yeah edge means where 2 faces meet then in triangular prism faces are meeting to make 9 edges how become 9 edges

Answer 7

wats ur question

Answer 8

you're asking why 9 edges ?

Answer 9

no i,m not asking why i'm asking how?

Answer 10

okay count the sides

Answer 11

u have two triangles and 3 rectangles

# of sudes = 2x3 + 3x4 = 18

Answer 12

edge is the meeting point of faces, thus each edge eats up 2 sides :-
number of edges = 18/2 = 9

if that looks plausible to u

Answer 13

there are 9 sides but if we see a cone then?it has one edge

Answer 14

lets define terms :-

side
edge
face
vertex

Answer 15

side is a 2 dimensional term related to polygon
all other 3 terms are polyhedra related terms ok

Answer 16

oh sorry i know but edge is where two faces meet now i m doing what you say right away wait

Answer 17

take ur time, this is interesting topic to spend time in