Answer:Refer to the image attached.
Given:  and  are congruent.
To Prove: ABC is an isosceles triangle.
Construction: Construct a perpendicular bisector from point B to Line segment AC.
Consider triangle BAD and BCD,
 (given)
(By the definition of a perpendicular bisector)
 (By the definition of a perpendicular bisector)
Therefore,  by Angle Side Angle(ASA) Postulate.
Line segment AB is congruent to Line segment BC because corresponding parts of congruent triangles are congruent.(CPCTC)
Step-by-step explanation:
 
        
                    
             
        
        
        
These triangles are congruent by the hypotenuse-leg theorem, which states that if the hypotenuse and a leg of two right triangles are congruent, the triangles are congruent.
Answer:
B) HL
Side note: There is not such thing as AAA congruence. (:
        
             
        
        
        
Well find the unit rate first 8 pm to 12 o'clock is 4 hours so -16.8/4=-4.2 degrees per hour since 8. So 1 hour later it would be 0-4.2=-4.2 degrees.
        
             
        
        
        
Answer:
Y<= x+1
Explanation:
Shaded below the line = less than
Solid line = with equal
+1 is the intercept
 
        
             
        
        
        
Answer:
B
Step-by-step explanation:
To solve this, we use ratio.
Firstly, we need to know the number of hours traveled. The total number of hours traveled = x+y
Ratio of this used by high speed train = x/(x +y).
Total distance traveled before they meet = [x/(x + y)] × z
For low speed train = [y/(x + y)] × z.
The difference would be distance by high speed train - distance by low speed train.
= z [ (x - y)/x + y)]