Question

The proof by indirect method is shown below. In which step does the contradiction appear?

Given: –→BD is not ⊥ ↔AC
Prove: m∠1 ≠ m∠2


Step 1: Assume m∠1 = m∠2
Step 2: ∠1 and ∠2 are linear pairs and supplementary angles
Step 3: ∠1 and ∠2 are right angles
Step 4: –→BD ⊥ ↔AC
Step 5: m∠1 ≠ m∠2



A. Step 1
B. Step 5
C. Step 2
D. Step 4

Answer 1

U were right! :P sorry. Step 4

Answer 2

oh i got confused lol :)

Answer 3

It is GIVEN that it is NOT perpendicular, so in the proof they cannot say they are.

Answer 4

More? :D

Answer 5

thanks again :)

Answer 6

yes!