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Firdavs [7]
3 years ago
11

Help please! ill mark brainliest!!

Mathematics
1 answer:
Makovka662 [10]3 years ago
8 0

Answer:

The answer is 80

Step-by-step explanation:

When EC=DE

then

m<D =m<C

m < d =  \frac{180 - 20}{2}  =  \frac{160}{2}  = 80

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