Answer:
slope = 4/3
Step-by-step explanation:
(-1 , 1) = (x1 , y1)
(2 , 5) = (x2 , y2)
slope (m) = y2 - y1/x2 - x1
=5 - 1/2 - (-1)
=4 /2+1
=4/3
160 cm²
V = 1/3 * 24 * 20 = 160 cm²
90
1. Acute
2. Obtuse
3. Isosceles