Answer:
should be a plane.
a plane is two dimensional and has intimate length and width. so it contains infinite lines. 
 
        
             
        
        
        
SinA=5root3/10
CosA=5/10
TanA=5root3/5=root3
SinC=5/10=1/2=0.5
CosC=5root3/10
Tanc=5/5root3=1/root3
        
             
        
        
        
Answer: a) Yes b) Polygon ABCD ~ Polygon EFGH c) JKLM is 3x bigger than polygon ABCD
Step-by-step explanation:
(for part c)
JM= 36
AD= 12
36/12= 3
JKLM is 3x bigger than polygon ABCD
 
        
             
        
        
        
Answer:
1)=0
2)

3)

4)

5) I don't know that one.
 
        
             
        
        
        
Answer:
A.   E={ and
 and  is a multiple of 8}
 is a multiple of 8}
Step-by-step explanation:
Let  represent the set of natural numbers. Then we can write;
 represent the set of natural numbers. Then we can write;
 .
.
The set of all natural numbers that are multiples of 8 is then written as;
 and
 and  is a multiple of 8.
 is a multiple of 8.
E is the set of natural numbers that are multiples of 8 can then be written in set builder notation as;
E={ and
 and  is a multiple of 8}
 is a multiple of 8}
The correct choice is A