Answer:
from left to right 4,20,25,20
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Adjacent 
Step-by-step explanation:
Because supplementary angles make 180 degrees, complementary make 90 degrees, vertical angles are pairs of opposite angles made by two intersecting lines.
 
        
             
        
        
        
Answer:
Area of triangle= Half of perpendicular times base
In short:1/2×p×b
 
        
             
        
        
        
Answer:
x = 19°
Step-by-step explanation:
Given that < (6x + 1)° + < (3x + 8)° are supplementary angles whose sum = 180° 
6x + 1 + 3x + 8 = 180°
Add common terms:
9x + 9 = 180°
Subtract 9 from both sides:
9x + 9 - 9 = 180° - 9
9x = 171°
Divide both sides by 9 to solve for x:

x = 19°