Geometry: Topic 10 (Circles)
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the formula to convert degrees to radians?
Back
Radians = Degrees × (π/180)
2.
FLASHCARD QUESTION
Front
What is 150° in radians?
Back
5π/6
3.
FLASHCARD QUESTION
Front
What is the formula for the length of an arc in a circle?
Back
Length of arc = (θ/360) × 2πr, where θ is in degrees.
4.
FLASHCARD QUESTION
Front
Find the length of the arc for a circle with radius 7 yd and angle 90°.
Back
Length of arc = (90/360) × 2π(7) = 3.5π yd.
5.
FLASHCARD QUESTION
Front
Convert 100° to radians.
Back
5π/9
6.
FLASHCARD QUESTION
Front
What is the relationship between the angles formed by two intersecting chords in a circle?
Back
If AB and CD are two chords intersecting at point E, then ∠BEQ = ∠CEQ.
7.
FLASHCARD QUESTION
Front
What is the measure of a right angle in degrees?
Back
90 degrees.
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