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liraira [26]
3 years ago
15

URGENT!!! ABCD is parallelogram. If m

Mathematics
1 answer:
Lesechka [4]3 years ago
3 0

Answer:

angle BAD= angle BCD = 100

then,

angle BCD + angle ECD = 180

100+ angle ECD = 180

angle ECD= 180-100 = 80

angle ECD =80

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