Answer:
All of the angles are 60°, because 180÷3 is 60. so the measure of angle b plus the measure of angle a and angle c is equal to 180°. The measure of angle a + 120° is 180
 
        
                    
             
        
        
        
Answer:
Graph attached.
Step-by-step explanation:
y >  x + 3
x + 3
When x = 0 , y = 3
When y = 0 , x = -4.5
Graphing the two points (0, 3) and (-4.5, 0) gives the graph attached below:
The shaded part is the wanted region.
 
        
                    
             
        
        
        
Answer:
16 Units.
Step-by-step explanation:
Given:
THIS CASE ⇒ AC = BD
⇒ Substitute the values
2 (x - 3) = x + 5
⇒ Clear the value of x
2x - 6 = x + 5
2x - x = 5 + 6
x = 11
⇒ Substitute the value of x in any of the equations
11 + 5 = 16
⇒ Length of each diagonal is 16 units.
 
        
                    
             
        
        
        
5 
Explanation: 
2 - (-3) = 5