Question

All lines are straight or a triangle has four sides.

conjunction
disjunction
negation
conditional

Answer 1

hmmm... so disjunction
In my response in the previous question, I forgot to mention that disjunctions also use the word OR.

Answer 2

A conjunction is when you have the word AND linking two occurrences together, like your example above
A disjunction is when you have two different sentences, and you have to figure out what they mean, like a logic puzzle... Also, it could be when you use the word OR, like in "Should I get you a water bottle OR a soda?"
A negation is when you use NOT in a sentence, like "I went to the supermarket, NOT the mall..."
A conditional sentence is one where they have a statement that uses if... like:"I will buy you a new pair of shoes only IF you will pay me back"
hope this helps

Answer 3

thank you so much @MelissaHolmes

Answer 4

you're welcome :)