
This result is actually true for any exterior angle. The exterior angle of a triangle is equal to the sum of the two remote angles, and above is a short proof of it.
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Step-by-step explanation:

Answer:
You cross multiply to solve for a variable. You cross multiply when given a proportion.
Answer:
a. pancreas
other body part is related to urinary system except pancreas as it is related to digestive
b. heart
it is a part of circulatory system whereas other are digestive
c. vagina
as it is female reproductive system
Step-by-step explanation: