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

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•
Mathematics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The sum of the interior angles in a triangle is always 180°.
2.
FLASHCARD QUESTION
Front
If one angle in a triangle is 90°, what type of triangle is it?
Back
It is a right triangle.
3.
FLASHCARD QUESTION
Front
What is an acute angle?
Back
An acute angle is an angle that measures less than 90°.
4.
FLASHCARD QUESTION
Front
What is an obtuse angle?
Back
An obtuse angle is an angle that measures more than 90° but less than 180°.
5.
FLASHCARD QUESTION
Front
How do you find the measure of a missing angle in a triangle?
Back
Subtract the sum of the known angles from 180°.
6.
FLASHCARD QUESTION
Front
What is the relationship between the angles in an isosceles triangle?
Back
In an isosceles triangle, the angles opposite the equal sides are equal.
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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