What is a circle?
2025 Circles Retake Review

Flashcard
•
Mathematics
•
9th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A circle is a shape consisting of all points in a plane that are at a given distance from a fixed point, called the center.
2.
FLASHCARD QUESTION
Front
What is the diameter of a circle?
Back
The diameter is the longest distance across the circle, passing through the center, and is twice the length of the radius.
3.
FLASHCARD QUESTION
Front
What is a chord in a circle?
Back
A chord is a line segment with both endpoints on the circle.
4.
FLASHCARD QUESTION
Front
What is the relationship between a diameter and a chord?
Back
A diameter is a special type of chord that passes through the center of the circle.
5.
FLASHCARD QUESTION
Front
What does it mean for a diameter to be perpendicular to a chord?
Back
It means that the diameter intersects the chord at a right angle (90 degrees).
6.
FLASHCARD QUESTION
Front
How do you find the measure of an angle formed by two intersecting chords?
Back
The measure of the angle is equal to half the sum of the measures of the arcs intercepted by the angle.
7.
FLASHCARD QUESTION
Front
What is the measure of an arc?
Back
The measure of an arc is the degree measure of the angle that subtends the arc at the center of the circle.
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