What is the Triangle Sum Theorem?
Triangle Sum/Exterior Angle

Flashcard
•
Mathematics
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.
2.
FLASHCARD QUESTION
Front
If one angle of a triangle is 90 degrees, what type of triangle is it?
Back
It is a right triangle.
3.
FLASHCARD QUESTION
Front
What is the measure of the third angle in a triangle if the first two angles are 34 degrees and 101 degrees?
Back
45 degrees.
4.
FLASHCARD QUESTION
Front
What is the formula to find the measure of an exterior angle of a triangle?
Back
The exterior angle is equal to the sum of the two opposite interior angles.
5.
FLASHCARD QUESTION
Front
If two angles of a triangle are 30 degrees and 70 degrees, what is the measure of the third angle?
Back
80 degrees.
6.
FLASHCARD QUESTION
Front
What is the relationship between the angles in a triangle and its exterior angles?
Back
Each exterior angle is equal to the sum of the two non-adjacent interior angles.
7.
FLASHCARD QUESTION
Front
How do you find the value of x in a triangle when given two angles?
Back
Subtract the sum of the two angles from 180 degrees.
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