Answer:
The sum of any triangle is 180 degrees.
Explanation:
a = 60
b = 60
c = 60
d = 42
e=35
f=35
g=55
h=45
i=45
j=15
k=15
l=75
m=120
n=21
o=69
p=21
q=55
r=55
s=42
t=42
u=69
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