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Triangles-- find the M<ECD if ​ABC angels are 31 degress.
picture added​

Triangles-- find the M<ECD if ​ABC angels are 31 degress. picture added​-example-1

1 Answer

7 votes

Answer:

Explanation:

180° - 2 × 31° = 118° is measure of an angle which is vertical to ∠ECD ⇒

m∠ECD = 118°

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User Thomas Ruiz
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