You can see if the other angles add up to 180 or 360 degrees (depending on shape) then add them to make it the number, for example, if a triangle has a right angle, then the other 2 angles are 45 degrees, knowing that EVERY triangle's angles add up to 180 degrees.
It represents the thing the avadocate needs to be muiltiplied by
The same as angle as measurement of angle 1. Corresponding angles.
First simplify the expression.
1/3(1,650+0.15c)
550+0.05c
Answer is A
Hope this helps!