Question

1. Write an indirect proof to show that opposite angles of a parallelogram are congruent. Be sure to create and name the appropriate geometric figures. *please help!* ****Medal Awarded!!****

Answer 1

I'm sorry, but I've never heard of an indirect proof. I may be able to help if you elaborate on what that is

Answer 2

oh it's just a proof by contradiction, yes?

Answer 3

Sorta I think. here's an example

Given: A number squared equals that number times itself.

Prove: Three squared equals nine.

Check Your Answer
Assume that three squared does not equal nine.


Statement Justification
Three squared does not equal nine. Assumption of the opposite of the prove statement.
A number squared equals that number times itself. Given.
Three times three equals nine. By the definition of squared in the given information.
Three squared must equal nine. Since three times itself equals nine, three squared must equal nine.

Answer 4

ok, so yea, this is just a proof by contradiction. Why do they have to come up with new name for this stuff....

Answer 5

can you help me? I'm really stuck

Answer 6

yea, so just tell me, if it didn't require you to do anything weird. How would you show that opposite angles of a parallelogram are the same?

Answer 7

what is your intuition?