Answer:
the answer is b
Step-by-step explanation:
answers is pictured
Answer:
PSQ and RSP
Because both of them have a 90 angle at S because given that PS is perpendicular to QR
Which is an A postulate
Then
Part 3 in attached file
Hope u understand
Answer:

Step-by-step explanation:
Please see the attached pictures for the full solution.
Answer:
B Astronomers
Step-by-step explanation:
They use a special branch of observational geometry called spherical geomrtry
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