Question

The proof by indirect method is shown below. In which step does the contradiction appear?
Given: p || r and m∠1 ≠ m∠2
Prove: line p is not || to line q


Step 1: Assume p || q
Step 2: Since p || r, then m∠3 = m∠1
Step 3: m∠3 = m∠2
Step 4: m∠1 = m∠2
Step 5: line p is not || to line q

A. Step 1
B. Step 2
C. Step 3
D. Step 4

Answer 1

which step is contradicting the Given data ?

Answer 2

it is Given that m∠1 ≠ m∠2, do you see at any step we arrive at the opposite of this ?

Answer 3

step 4

Answer 4

so at step 4 we arrive at contradiction of whats given, so we stop and holler that we proved the thingy !

Answer 5

lol stop & holler! but okay cool i actually got one right!

Answer 6

more you do these more you get right :)

Answer 7

any indirect proof goes same way :-
we assume opposite of wat we need to prove, and look for a contradiction, when we get one, we stop and say that we proved.

Answer 8

yea when i was trying to do these myself i would google so i would get some type of explanation but hell no it was to confusing!