according to the sequence of events described in the riddle of the rosseta stone, what leads the scholars to belive what the three inscriptions say the same thing in different languages?

yes

explanation:

right angles are formed by perpendicular lines. if the lines would extend, to make two intersecting lines, they would form four right angles.

you can change by someone having a negative opinon of you in many ways for example thi can lead to depression and taking of ones life also known as sucide this effects there self esteem and ego in a negative way making them feel sad depressed and stressed causing them to act gloomy and sad if this continuses this can lead to self harm or much worse things.

hope i .

i may be wrong but i think your answer is flashback