GEOMETRY: Unit #3A [Part 1]
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the sum of the interior angles of a triangle?
Back
The sum of the interior angles of a triangle is always 180 degrees.
2.
FLASHCARD QUESTION
Front
If two angles in a triangle are 45° and 75°, what is the measure of the third angle?
Back
The third angle measures 60°.
3.
FLASHCARD QUESTION
Front
Define an exterior angle of a triangle.
Back
An exterior angle of a triangle is equal to the sum of the two opposite interior angles.
4.
FLASHCARD QUESTION
Front
What is the measure of angle A if it is given that angle A = 20°?
Back
Angle A measures 20°.
5.
FLASHCARD QUESTION
Front
How do you find the measure of an unknown angle in a triangle?
Back
To find an unknown angle, subtract the sum of the known angles from 180°.
6.
FLASHCARD QUESTION
Front
What is a corresponding angle?
Back
Corresponding angles are angles that are in the same position on two parallel lines cut by a transversal.
7.
FLASHCARD QUESTION
Front
What is the definition of an interior angle?
Back
An interior angle is an angle formed inside a polygon by two adjacent sides.
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