An indirect proof has been successful if you reach a contradiction of a known fact. a. true b. false c. cannot tell

True

Step-by-step explanation:

First we must understand the difference between direct and indirect proof

A direct proof assumes that the hypothesis of a conjecture is true, and then uses a logical well defined arguments  to prove that the conclusion of the conjecture is true.

An indirect proof assumes that it is not true and hence relies  on a contradiction to prove , and then running into a contradiction proving that the conjecture must be true.

Thus we assume a contradiction and proceed then we get a wrong conclusion stating that our assumption is false.

Thus a) True.

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.

i need points

step-by-step explanation:

sorry bubs