You would use Pythagorean theorem to help u out if u have 2 sides u should be able to do it.
Answer:
radio relationships?what do u mean?
Answer:87
For every 17 students, there is 1 teacher. So you divide 1476 by 17= 86.8235... Round that up to 87 (cause you can’t have 86 and 1/6 of a teacher )
The first one is congruent because it is just turned 120degrees