Triangle Sum Theorem and Exterior Angle Theorem

Flashcard
•
Mathematics
•
9th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What does the Triangle Sum Theorem state?
Back
The Triangle Sum Theorem states that the sum of the interior angles of a triangle is always 180 degrees.
Tags
CCSS.8.G.A.5
2.
FLASHCARD QUESTION
Front
What is an exterior angle of a triangle?
Back
An exterior angle of a triangle is formed by one side of the triangle and the extension of an adjacent side.
3.
FLASHCARD QUESTION
Front
What is the relationship between an exterior angle and the remote interior angles?
Back
The exterior angle is equal to the sum of the two remote interior angles.
Tags
CCSS.8.G.A.5
4.
FLASHCARD QUESTION
Front
If two angles in a triangle are 45° and 75°, what is the measure of the third angle?
Back
60°
Tags
CCSS.8.G.A.5
5.
FLASHCARD QUESTION
Front
What is the measure of an angle that is complementary to a 45° angle?
Back
45° (since complementary angles sum to 90°).
Tags
CCSS.7.G.B.5
6.
FLASHCARD QUESTION
Front
If one angle of a triangle is 80° and the other two angles are equal, what are the measures of the other two angles?
Back
Each of the other two angles measures 50°.
Tags
CCSS.8.G.A.5
7.
FLASHCARD QUESTION
Front
What is the value of x if the angles in a triangle are x, 40°, and 100°?
Back
x = 40°.
Tags
CCSS.8.G.A.5
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