Slope Formula: (y2-y1)/(x2-x1)
0= x1, 0= y1
2= x2, 3= y2
(3-0)/(2-0)
3/2 is the slope
Answer:
Step-by-step explanation:
B + 87 +78 +66 = 360
B = 129 °
the angle next to B then is
180 = 129 + b '
51 ° = b '
A + 61 + b ' = 180
A = 68 °
20/9 is the answer that I got