What is the sum of the interior angles of a triangle?
FLASHCARD 2: Angles in Triangles

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Mathematics
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The sum of the interior angles of a triangle is always 180 degrees.
2.
FLASHCARD QUESTION
Front
What is an acute angle?
Back
An acute angle is an angle that measures less than 90 degrees.
3.
FLASHCARD QUESTION
Front
What is a right angle?
Back
A right angle is an angle that measures exactly 90 degrees.
4.
FLASHCARD QUESTION
Front
What is an obtuse angle?
Back
An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.
5.
FLASHCARD QUESTION
Front
If one angle of a triangle is 60 degrees and another is 70 degrees, what is the measure of the third angle?
Back
The third angle measures 50 degrees, calculated as 180 - (60 + 70).
6.
FLASHCARD QUESTION
Front
What is the relationship between the angles in a right triangle?
Back
In a right triangle, one angle is 90 degrees, and the sum of the other two angles is 90 degrees.
7.
FLASHCARD QUESTION
Front
What is the exterior angle theorem?
Back
The exterior angle of a triangle is equal to the sum of the two opposite interior angles.
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