What is the Exterior Angle Theorem?
Exterior Angle Theorem

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•
Mathematics
•
7th - 11th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The Exterior Angle Theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two remote interior angles.
2.
FLASHCARD QUESTION
Front
Define remote interior angles.
Back
Remote interior angles are the two angles inside a triangle that are not adjacent to a given exterior angle.
3.
FLASHCARD QUESTION
Front
If angle d is an exterior angle, which angles are its remote interior angles?
Back
The remote interior angles to angle d are the two angles inside the triangle that do not share a vertex with angle d.
4.
FLASHCARD QUESTION
Front
What is the relationship between an exterior angle and its adjacent interior angle?
Back
The exterior angle is supplementary to its adjacent interior angle, meaning they add up to 180 degrees.
5.
FLASHCARD QUESTION
Front
How do you find the measure of an exterior angle?
Back
To find the measure of an exterior angle, add the measures of the two remote interior angles.
6.
FLASHCARD QUESTION
Front
If angle a = 50° and angle b = 70°, what is the measure of the exterior angle d?
Back
The measure of exterior angle d is 50° + 70° = 120°.
7.
FLASHCARD QUESTION
Front
What is the sum of the interior angles of a triangle?
Back
The sum of the interior angles of a triangle is always 180 degrees.
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