Answer:
S(0, 2)
Step-by-step explanation:
Midpoint Formula:
Step 1: Plug in known variables
5 = (10 + x)/2
-8 = (18 + y)/2
Step 2: Solve
10 = 10 + x
x = 0
-16 = 18 + y
y = 2
Step 3: Write coordinates
(0, 2)
d=90°
e=81°
f=99°
To find f
180-81
=99
true
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