Answer:
Vertical angles are always equal to one another. In general, we can say that, 2 pairs of vertical angles are formed when two lines intersect.
Step-by-step explanation:
Parallel lines are lines that do not meet at any point in a plane.
Intersecting lines are straight lines that meet or crosses each other at a certain point.
 
        
             
        
        
        
open the parenthes. and then after that you'll get 27+12x-15. if you simplify that then you'll get 12x+12
 
        
                    
             
        
        
        
The sum of all the interior angles in a hexagon is 720°, so if you add up all the angles and then take them away from 720, you'll get your answer:
152 + 85 = 237
237 + 85 = 322
322 + 125 = 447
447 + 135 = 582
So 720 - 582 = 138°, which is your answer. I hope this helps!
        
             
        
        
        
28 each book 155-15=140 and then 140÷5=28
 
        
             
        
        
        
Not sure, but the areas of a triangle is BH/2 so the dimensions should be 8 and 6 then 10. 
8 x 6 = 48 
48/2 = 24
Maybe that can help with the equation