What is the sum of the interior angles of a triangle?
Interior and Exterior Angles of 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 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 an exterior angle of a triangle?
Back
An exterior angle is formed by one side of the triangle and the extension of an adjacent side.
4.
FLASHCARD QUESTION
Front
How do you calculate the measure of an exterior angle?
Back
The measure of an exterior angle is equal to the sum of the two opposite interior angles.
5.
FLASHCARD QUESTION
Front
If two angles of a triangle are 45 degrees each, what is the measure of the third angle?
Back
The third angle measures 90 degrees.
6.
FLASHCARD QUESTION
Front
What is the relationship between the interior and exterior angles of a triangle?
Back
The exterior angle is equal to the sum of the two non-adjacent interior angles.
7.
FLASHCARD QUESTION
Front
If the angles of a triangle are in the ratio 2:3:4, what are the measures of the angles?
Back
The angles measure 40 degrees, 60 degrees, and 80 degrees.
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