OpenStudy (anonymous):

The proof by indirect method is shown below. In which step does the contradiction appear? Given: AB ≠ DE and point C is a midpoint of BD Prove: AC ≠ CE Step 1: Assume AD = CD Step 2: BC = CD Step 3: AC − BC = CE − CD Step 4: AB = DE Step 5: AC ≠ CE A. Step 5 B. Step 4 C. Step 2 D. Step 1

5 years ago
OpenStudy (anonymous):

|dw:1367940101545:dw|

5 years ago
OpenStudy (anonymous):

Step 5

5 years ago
ganeshie8 (ganeshie8):

Step 4

5 years ago
OpenStudy (anonymous):

can someone explain? .-.

5 years ago
ganeshie8 (ganeshie8):

if you see step 4 says AB = DE which contradicts the Given

5 years ago
OpenStudy (anonymous):

Shouldn't the contradiction disprove the assumption, not the given?

5 years ago
ganeshie8 (ganeshie8):

we start with the opposite of what needs to be proven and stop when we arrive at a contradiction in given or assumptions.

5 years ago
ganeshie8 (ganeshie8):

are you doing the end exam ?

5 years ago
OpenStudy (anonymous):

no im working on a computer im in a program called options and its self paced right now im doing lessons to finish the course thats why i come on here for help.

5 years ago
ganeshie8 (ganeshie8):

ohk..

5 years ago