Prove that angle ADC is congruent to angle CBA

with solution!

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.

the answer to this is a. a^2 + b^2 = c^2

i think it is d. hope this