What is a scalene triangle?
Classifying Triangles, Triangle Sum, Exterior Angles 2

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Mathematics
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9th - 10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A scalene triangle is a triangle in which all three sides are of different lengths and all three angles are of different measures.
2.
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.
3.
FLASHCARD QUESTION
Front
What is an acute triangle?
Back
An acute triangle is a triangle where all three interior angles are less than 90 degrees.
4.
FLASHCARD QUESTION
Front
What is an obtuse triangle?
Back
An obtuse triangle is a triangle that has one interior angle greater than 90 degrees.
5.
FLASHCARD QUESTION
Front
What is a right triangle?
Back
A right triangle is a triangle that has one interior angle equal to 90 degrees.
6.
FLASHCARD QUESTION
Front
What is an equilateral triangle?
Back
An equilateral triangle is a triangle in which all three sides are of equal length and all three angles are equal, each measuring 60 degrees.
7.
FLASHCARD QUESTION
Front
What are vertical angles?
Back
Vertical angles are the angles opposite each other when two lines intersect. They are always congruent.
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