Math- Angles Flashcards

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1
Q

Exterior angle theorem

A

An exterior angle is formed when any side of a triangle is extended. An exterior angle is always equal to the sum of the two angles in the triangle furthest from it.

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2
Q

what is true when two parallel lines are divided by one line?

A

The vertical angles are equal, the alternate interior angles are equal, corresponding angles are equal, and same side interior angles are supplementary- they add to 180.

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3
Q

What is the formula for the sum of the interior angles of a polygon?

A

the sum of the interior angles = 180(n - 2) where n is the number of sides.

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