Answer:
B
Step-by-step explanation:525 is the constant so no variable should be next to it
Answer:
c
Step-by-step explanation:

looking at the picture above... you do have the radius, is just in the truncated part of the picture... so you have "h" and "r", so just plug them in
Answer:
a and b are parallel
Step-by-step explanation:
corresponding angles converse