Answer:
a. mountains, desert, bay, prairie
Answer:

Explanation:
Given

See attachment
Required
Find 
To do this, we make use of the following theorem
--- angle at the center and angle between two tangents add up to 180 (i.e. they are supplementary angles)
So, we have:

Collect like terms


Hello There!
What type of volcanic material indicated an eruption water..?
Your answer is: Pillow lavas is the type of volcanic material that indicates an eruption under water.
~Hope this helps!