Question

if 2 angles of an isosceles trapezoid are randomly selected, what is the probability that they will be supplementary?

Answer 1

what have ou tried...where are you stuck?

Answer 2

*you

Answer 3

i said 1/2 cause there total 4 angle and opp angles add 180 degrees

Answer 4

1/3

Answer 5

how did you get that

Answer 6

more than the opposite angles add to 180

Answer 7

for ur first pick yu can pick any angle so its 4/4
for the second pick yu hav to pick the angle dat is opposite to da first one, and yu have three to pick from, therefore 1/3

(4/4)*(1/3)= 1/3

Answer 8

huh? sorry i get it

Answer 9

D and B add to 180
but so do D and A

Answer 10

so wouldn't the answer be 2/3

you chose the first angle randomly then you have chose the rest angle which are supplementary to that which 2/3 angles.

Answer 11

yes

Answer 12

thanks @Zarkon

Answer 13

angles D and B do not add up to 180 :/

Answer 14

yes they do

Answer 15

no they dont lol