.

In a rhombus, there are a few unique properties. These include the fact that the diagonals are perpendicular and they also bisect the vertex angles.

So, because diagonals are perpendicular, we know that angle XVY is equal to 90 degrees.

Hope this helps!! :)

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.