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Unit D: Polygons and Circles
Virginia SOL Geometry Prep
13
Mathematics
11th Grade
05/30/2007

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Cards

Term
Regular
Definition
All angles are equal and all sides are equal.
Term
Sum of Interior Angles
Definition
180(n – 2)
Term
Each Interior Angle of a Regular Polygon
Definition
180(n – 2) ÷ n
Term
Sum of Exterior Angles
Definition
360
Term
Each Exterior Angle of a Regular Polygon
Definition
360 ÷ n
Term
Angles in Circles:
Intersecting AT CENTER of circle
Definition
Angle = Arc [image]
Term
Angles in Circles:
Intersecting ON the circle
Definition
Angle = ½ Arc [image]
Term
Angles in Circles:
Intersecting IN the circle
Definition
Angle = ½ (Arc + Arc) [image]
Term
Angles in Circles:
Intersecting OUTSIDE of the circle
Definition
Angle = ½ (Big Arc – Small Arc) [image]
Term
Segments of Circles:
Intersecting IN the circle
Definition
Product of one chord = Product of other chord [image]
Term
Segments of Circles:
Intersecting OUTSIDE the circle
Definition
outside • whole segment = outside • whole segment [image]
Term
Arc Length
Definition
Circumference ÷ 360 • Arc Degrees
Term
Area of a Sector
Definition
Area ÷ 360 • Arc Degrees
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