Question

calcule o número de diagonais de um:

Answer 1

A)
d=4 (4-3)/2
d=4. 1 passa o 2 pra lá
2d=4
d=2
B)
d=10 (10-3)/2
2d=10 (7)
2d=70
d=35
C)
d=12 (12-3)/2
2d=12 . 9
2d=108
d=54
D)

Answer 2

a)
d=4*(4-3)/2
d=4*1/2
d=4/2
d=2

b)
d=10*(10-3)/2
d=10*7/2
d=70/2
d=35

c)
d=12*(12-3)/2
d=12*9/2
d=108/2
d=54

D)
d=7*(7-3)/2
d=7*4/2
d=28/2
d=14

e)

d=6*(6-3)/2
d=6* 3/2
d= 18/2
d=9

f)

d=3*(3-3)/2
d=3*0/2
d=0