Answer:
AC=BD
CAD=CBD
ACB=ADB
Step-by-step explanation:
You're essentially looking for anything of equal proportions. Obviously, your circle is split by several lines, and each side is symmetric. Since you know this, it's simply a matter of identifying one element then finding its symmetric match. 
Follow the lines and trace the path with your finger for each question. If you do this, you'll see that AC=BD is an answer that involves a symmetric pair, because these two are equal distances and equal (but opposite) in placement. 
Continuing with this method, keep track of the parts of the triangles you trace. With CAD=CBD, you trace across a hypotenuse, a leg, and a base in BOTH, making this true.
Continuing further with ACB=ADB, you trace across a hypotenuse, a leg, and a base with both AGAIN, making this true. 
With AB=CD, this is obviously incorrect. You can't jump between points. 
 
        
                    
             
        
        
        
Step-by-step explanation:
the rhombus is both rectangle and square
 
        
                    
             
        
        
        
Free LCM Calculator determines the least common multiple (LCM) between 9 and 21 the smallest integer that is 63 that is divisible by both numbers. Least Common Multiple (LCM) of 9 and 21 is 63.
...
Prime Factorization of 21.
3	21
7	7
1
        
             
        
        
        
6
1. A, b, c
2. A, b, d
3. A, b, e 
4. C, a, b
5. D, a, b
6. E, a, b
Hope I helped!
        
             
        
        
        
Answer:
109r6
Step-by-step explanationi got it