angles in circles
Flashcard
•
Mathematics
•
9th - 12th Grade
•
Hard
+1
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an inscribed angle?
Back
An inscribed angle is an angle formed by two chords in a circle which have a common endpoint. The vertex of the angle is on the circle, and the sides of the angle are formed by the chords.
Tags
CCSS.4.MD.C.7
2.
FLASHCARD QUESTION
Front
What is a central angle?
Back
A central angle is an angle whose vertex is at the center of the circle and whose sides are radii that extend to the circle.
Tags
CCSS.HSG.C.A.2
3.
FLASHCARD QUESTION
Front
What is the relationship between an inscribed angle and the arc it intercepts?
Back
The measure of an inscribed angle is half the measure of the intercepted arc.
Tags
CCSS.HSG.C.A.2
4.
FLASHCARD QUESTION
Front
What is a tangent line to a circle?
Back
A tangent line is a straight line that touches the circle at exactly one point and does not cross into the circle.
5.
FLASHCARD QUESTION
Front
How do you find the measure of an angle formed by two tangents from a point outside the circle?
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
6.
FLASHCARD QUESTION
Front
What is the measure of an angle formed by a tangent and a chord?
Back
The measure of the angle formed by a tangent and a chord through the point of contact is equal to half the measure of the intercepted arc.
Tags
CCSS.HSG.C.A.2
7.
FLASHCARD QUESTION
Front
What is the sum of the angles in a circle?
Back
The sum of the angles around a point in a circle is 360 degrees.
Tags
CCSS.4.MD.C.5B
CCSS.HSG.CO.A.1
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