Answer:

Step-by-step explanation:
Midpoint Formula: 
Simply plug in your 2 coordinates into the midpoint formula to find midpoint:



Answer:
90°
Step-by-step explanation:
angle of rotation=90°
Answer:
y = 1/2x
Step-by-step explanation:
x - 2y = -4
x = -4 + 2y
x + 4 = 2y
2y = x + 4
y = 1/2x + 2
y = 1/2x
The answer is negative 149
Answer:
1.SAS, ASA,
2. Not congruent
3.C
4. If you could screenshot the whole page I can give tell you what it is.