Question

can anyone send me the answer​

Answer 1

number of edges triangle have hi

Answer 2

Triangle -

noof faces - 4 , Noof edges - 6, Noof vertices - 4

F+V-E = 2

Square -

face- 5 , Edge - 8 , vertices - 5

F+V-E = 2

Pentagon-

face- 6 , Edges- 10, Vertices- 6

F+V-E = 2

Hexagon -

Face - 7 , Edges - 12 , Vertices- 7

F+V-E = 2

hence, F+V-E= 2 In each case