Answer:
<h2>Midpoint (1 , 5)</h2>
Step-by-step explanation:
Let (x , y) be the coordinates of the midpoint then:

If you are looking for the value of N, multiply both sides by 4. The value of N is 4900.
The answer to your question is b. 2
X-intercept = -4
y-intercept = -8
<1 and <2 are complementary : given
<1+<2=90 : definition of complementary
<1 congruent <3 : given
<2 congruent <4 : given
<3 congruent <4 : transitive property