The answer would be choice C.
Perpendicular lines cross each other and form a right angle as you can see marked in the third picture.
BD is 31 degrees because it is the same.
ADB is 90-31 because it is a right angle ( 59 degrees)
DEC is 180 - (31*2) because the 180 is of the trangle and the 31 is the same on the other side so times 2 then removed from 180
Answer:
x=30
Step-by-step explanation:
it is an equilateral triangle, so all angles are the same. each angle is 60 degrees. 60/2 is 30, so 30 degrees is the answer.
Addition you add and in subtraction you subtract
You would multiply the tanks by gallons
36x205
= 7,380
