adjacent angles in a sentence

1) I.8 And they are adjacent angles .

adjacent collocations
2) They might find it helpful to create a separate list of what cannot be assumed. ✔ AC is a line. ✔ ∠ABD and ∠CBD are adjacent angles . ✔ ∠ABD and ∠CBD form a linear pair.

3) where "c" is any side of the triangle and "A