Answer:
see explanation
Step-by-step explanation:
Pythagorean Theorem
7² + 8² = x²
49 + 64 = x²
113 = x²
x = √113 or 10.63
Distance Formula
√(-4 - 4)² + (4 - -3)²
= √8² + 7²
= √113 or 10.63
The exterior angle theorem states that an exterior angle is equal to the sum of its remote interior angles.
So...
80+20=m<CAD
m<CAD=100°
Multiply all sides and you should get your answer!