Measuring Arcs
Flashcard
•
Mathematics
•
9th - 11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an arc in a circle?
Back
An arc is a portion of the circumference of a circle, defined by two endpoints on the circle.
2.
FLASHCARD QUESTION
Front
How do you measure an arc?
Back
The measure of an arc is determined by the central angle that subtends the arc, measured in degrees.
3.
FLASHCARD QUESTION
Front
What is the relationship between the central angle and the arc length?
Back
The length of an arc is directly proportional to the central angle that subtends it, with the formula: Arc Length = (Central Angle/360) * Circumference of the circle.
4.
FLASHCARD QUESTION
Front
What is a congruent arc?
Back
Congruent arcs are arcs that have the same measure and are subtended by the same central angle.
5.
FLASHCARD QUESTION
Front
How can you determine if two arcs are congruent?
Back
Two arcs are congruent if they are on the same circle and have the same measure.
6.
FLASHCARD QUESTION
Front
What is the formula for finding the circumference of a circle?
Back
The circumference of a circle is given by the formula: C = 2πr, where r is the radius.
7.
FLASHCARD QUESTION
Front
If the measure of arc CD is 61.2°, what does this indicate about the central angle?
Back
The measure of arc CD being 61.2° indicates that the central angle subtending arc CD is also 61.2°.
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