The two diagonals<span> are </span>equal<span> in length and bisect each other. Every </span>quadrilateral<span> with both these properties is a </span>rectangle<span>. A </span>rectangle<span> is rectilinear:which means its sides meet at right angles.</span>
        
                    
             
        
        
        
Answer:
53 I believe 
Step-by-step explanation:
add all then divide by how much numbers are there 
 
        
             
        
        
        
Answer:
8-14 or -6
Step-by-step explanation:
 
        
             
        
        
        
Answer:
x = 65
Step-by-step explanation:
Angles are equal because of the vertical angle thm
2x + 15 = 145
2x = 130
x = 65