Geometry Unit 4 Review
Flashcard
•
Mathematics
•
9th - 10th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a tangent to a circle?
Back
A tangent to a circle is a straight line that touches the circle at exactly one point.
2.
FLASHCARD QUESTION
Front
How do you find the length of a tangent segment from a point outside the circle?
Back
Use the formula: length of tangent = √(distance from point to center² - radius²).
3.
FLASHCARD QUESTION
Front
What is the relationship between angles formed by intersecting lines?
Back
Vertical angles are equal, and adjacent angles are supplementary.
4.
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.
5.
FLASHCARD QUESTION
Front
What is the measure of each angle in an equilateral triangle?
Back
Each angle in an equilateral triangle measures 60 degrees.
6.
FLASHCARD QUESTION
Front
How do you calculate the arc length of a circle?
Back
Arc length = (θ/360) × 2πr, where θ is the central angle in degrees and r is the radius.
7.
FLASHCARD QUESTION
Front
What is the definition of complementary angles?
Back
Complementary angles are two angles whose measures add up to 90 degrees.
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