Angles in Circles
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
+2
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of an angle in a circle?
Back
An angle in a circle is formed by two rays (sides of the angle) that share a common endpoint (the vertex) and are positioned at the center of the circle.
Tags
CCSS.4.G.A.1
2.
FLASHCARD QUESTION
Front
What is the measure of a central angle?
Back
A central angle is equal to the measure of the arc it intercepts.
Tags
CCSS.HSG.C.A.2
3.
FLASHCARD QUESTION
Front
What is an inscribed angle?
Back
An inscribed angle is formed by two chords in a circle which have a common endpoint. The measure of an inscribed angle is half the measure of the intercepted arc.
Tags
CCSS.HSG.C.A.2
4.
FLASHCARD QUESTION
Front
How do you find the measure of an angle formed by two tangents?
Back
The measure of the angle formed by two tangents drawn from a point outside the circle is equal to half the difference of the measures of the intercepted arcs.
Tags
CCSS.HSG.C.A.2
5.
FLASHCARD QUESTION
Front
What is the relationship between angles formed by intersecting chords?
Back
The measure of an angle formed by two intersecting chords is equal to the average of the measures of the arcs intercepted by the angle and its vertical angle.
Tags
CCSS.HSG.C.A.2
6.
FLASHCARD QUESTION
Front
What is the formula for the sum of angles in a circle?
Back
The sum of all angles around a point in a circle is 360 degrees.
Tags
CCSS.4.MD.C.5B
CCSS.HSG.CO.A.1
7.
FLASHCARD QUESTION
Front
What is the relationship between a tangent and a radius?
Back
A tangent to a circle is perpendicular to the radius drawn to the point of tangency.
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