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How do you solve for exterior angle therom
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How do you solve for exterior angle therom

User Ajit Bhandari
by
3.4k points

1 Answer

3 votes

Answer:

The interior angles of a triangle add to 180°:a + b + c = 180°

Angles c and d make a straight angle, which is 180°:d + c = 180°

So d + c equals a + b + c:d + c = a + b + c.

Subtract c from both sides:d = a + b.

Explanation:

User Jon Romero
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