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mariarad [96]
3 years ago
13

What is mZD? * B 50° F 250 Ε 650 А.

Mathematics
1 answer:
mihalych1998 [28]3 years ago
5 0

Answer:

m\angle D = 40\degree

Step-by-step explanation:

m\angle DEC = 25\degree

(Vertical angles)

m\angle DCE = 180\degree - 65\degree

(Linear pair angles)

m\angle DCE = 115\degree

In \triangle DCE

By interior angle sum postulate of a triangle

m\angle D = 180\degree-(115\degree + 25\degree)

m\angle D = 180\degree-140\degree

m\angle D = 40\degree

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