Triangle Sum Theorem

Flashcard
•
Mathematics
•
8th Grade
•
Hard
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the Triangle Sum Theorem?
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
If one angle of a triangle is 90 degrees and another is 45 degrees, what is the measure of the third angle?
Back
The third angle is 45 degrees, since 90 + 45 + x = 180.
Tags
CCSS.8.G.A.5
3.
FLASHCARD QUESTION
Front
What is the measure of each angle in an equilateral triangle?
Back
Each angle in an equilateral triangle measures 60 degrees.
Tags
CCSS.8.G.A.5
4.
FLASHCARD QUESTION
Front
How do you find the measure of an unknown angle in a triangle?
Back
Subtract the sum of the known angles from 180 degrees.
Tags
CCSS.8.G.A.5
5.
FLASHCARD QUESTION
Front
If two angles of a triangle are 70 degrees and 50 degrees, what is the measure of the third angle?
Back
The third angle is 60 degrees, since 70 + 50 + x = 180.
Tags
CCSS.8.G.A.5
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.
Tags
CCSS.8.G.A.5
7.
FLASHCARD QUESTION
Front
What is the formula to calculate the sum of angles in a triangle?
Back
The formula is: Angle1 + Angle2 + Angle3 = 180 degrees.
Tags
CCSS.8.G.A.5
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