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Triangle Angle Sum Theorem & Exterior Angle Theorem
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
Student preview
15 questions
Show all answers
1.
FLASHCARD QUESTION
Front
What is the Triangle Angle Sum Theorem?
Back
The Triangle Angle 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 50° and another is 60°, what is the measure of the third angle?
Back
70°
3.
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.
4.
FLASHCARD QUESTION
Front
If an exterior angle measures 120°, and one of the non-adjacent interior angles is 50°, what is the measure of the other non-adjacent interior angle?
Back
70°
5.
FLASHCARD QUESTION
Front
What is the measure of each angle in an equilateral triangle?
Back
Each angle in an equilateral triangle measures 60°.
6.
FLASHCARD QUESTION
Front
How do you find the measure of an angle in a triangle if you know the measures of the other two angles?
Back
Subtract the sum of the known angles from 180°.
7.
FLASHCARD QUESTION
Front
What is the relationship between the angles in a right triangle?
Back
In a right triangle, one angle is 90°, and the sum of the other two angles is 90°.
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