Answer:
a=69
b=133
c=116
d=93
e=86
Step-by-step explanation:
first start by finding angle a:
angles in a triangle add up to 180 so we can simply do 180 - 40 - 71 = 69
to find b:
b is on a straight line so we can do 180 - 133 = 47
to find d:
d is part of the small triangle on the right of the diagram, we do not know one of the angles but because it is on a straight line we can do 180-140 = 40. Now to find d we can do 180 - 47 - 40 = 93
to find e:
i'm assuming the large triangle containing e is isosceles so we can do 180 - 2x47 = 86
therefore c is 116 as its the only answer left - hope this helps