Exterior Angle Theorem
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the Exterior Angle Theorem?
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 non-adjacent interior angles.
2.
FLASHCARD QUESTION
Front
If one interior angle of a triangle is 50° and another is 60°, what is the measure of the exterior angle?
Back
The exterior angle is 110° (50° + 60°).
3.
FLASHCARD QUESTION
Front
What is the relationship between an exterior angle and its adjacent interior angle?
Back
The exterior angle is equal to the sum of the two opposite interior angles, not the adjacent one.
4.
FLASHCARD QUESTION
Front
How do you find the measure of an unknown angle using the Exterior Angle Theorem?
Back
Add the measures of the two non-adjacent interior angles to find the measure of the exterior angle.
5.
FLASHCARD QUESTION
Front
If an exterior angle measures 130°, what are the possible measures of the two non-adjacent interior angles?
Back
The sum of the two non-adjacent interior angles must equal 130°.
6.
FLASHCARD QUESTION
Front
Solve for x: If one interior angle is 70° and the exterior angle is x, what is x?
Back
x = 70° + the other non-adjacent interior angle.
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°.
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