00:01
So for number four, we're told to use the law of syllogism to determine whether or not a valid conclusion can be reached, given the statements that it gives you in the question.
00:13
So if you can, then we write what the conclusion we reached was, and if we can't, then we write no conclusion.
00:20
So for number four, our statements are, if a midpoint divides a segment in the two congruent segments.
00:26
Our statements are firstly that the midpoint divides a segment into two congruent segments.
00:33
Next, we know if two congruent segments are congruent, then their measures are equal.
00:41
So the law of syllogism, if we remember, states that if conditional, if conditional pq is true, and conditional, we can write this out in the actual notation.
00:56
So if conditional if conditional pq is true and conditional qr is true, then that would mean that conditional pr is also true.
01:17
So all this fancy notation is just how you write out conditionals.
01:21
So we have our brackets here, which is our, essentially our big conditional, because this whole thing is a conditional on its own.
01:29
So we're assuming if everything in this thing is true and this is true, then this is true.
01:36
Those are these arrows mean.
01:38
So we're assuming if this is true, like if this relationship is a true thing and this symbol here means and this relation right here is true, then this whole thing is true.
01:50
And then if this is true, then we know this must be true, according to the law of syllogism.
01:57
So we'll let this out an example...