What is an angle?
Angles and Triangles

Flashcard
•
Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
An angle is formed by two rays (sides) that share a common endpoint (vertex). It is measured in degrees.
2.
FLASHCARD QUESTION
Front
What is a triangle?
Back
A triangle is a polygon with three edges and three vertices. The sum of the interior angles of a triangle is always 180°.
3.
FLASHCARD QUESTION
Front
What are congruent angles?
Back
Congruent angles are angles that have the same measure.
4.
FLASHCARD QUESTION
Front
What is the measure of a right angle?
Back
A right angle measures 90°.
5.
FLASHCARD QUESTION
Front
What is the measure of an acute angle?
Back
An acute angle measures less than 90°.
6.
FLASHCARD QUESTION
Front
What is the measure of an obtuse angle?
Back
An obtuse angle measures more than 90° but less than 180°.
7.
FLASHCARD QUESTION
Front
What is the sum of the angles in a triangle?
Back
The sum of the angles in a triangle is always 180°.
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