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ANTONII [103]
3 years ago
8

PLease help!! I will give brainliest for the right answer!!

Mathematics
1 answer:
Tomtit [17]3 years ago
8 0

Answer:

angle CDE is 10 degree

Step-by-step explanation:

As angle C is 90

Angle E is equal to angle B which is 80 (180-100)

so 90+80+X=180

X=180-170

X=10

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