The fourth one But I think
No product results in -1, hence δlmn is NOT a right triangle showing that lydia's assertion is incorrect
<h3>Perpendicular lines</h3>
In order to determine whether triangle lmn is right-angled, we need to determine the slope of lm, ln, and mn first as shown:
For the slope of lm:

For the slope of ln:

For the slope of mn:

- If any of the two lines is perpendicular, hence the triangle lmn is right-angled.
- To check, we will take the product of the slopes and see if it is equivalent to -1.
Product of slope lm and ln

Since no product results in -1, hence δlmn is NOT a right triangle showing that Lydia's assertion is incorrect
Learn more on slopes here: brainly.com/question/3493733
The two ways that cinna's request to get brutus involved affect cassius are;
- B. Cinna's request makes Cassius ask him to take an incriminating letter to Brutus.
- C. Cinna's request makes Cassius trust him to return to Pompey's Theatre and meet Cassius there.
<h3>What are the lessons from a passage?</h3>
From the given passage, when Cinna says he wanted Brutus to join them, it propelled Cassius to ask Cinna to deliver a letter to Brutus. Now, this was very obvious when Cassius said "Be you content. Good Cinna, take this paper and look you lay it in the praetor’s chair, where Brutus may but find it. And throw this in at his window. Set this up with wax upon old Brutus’ statue."
Looking at the given options, and comparing with the summary above we can say that options B and C are correct
Read more about passage lessons at; brainly.com/question/25950911