Arcs
This is a portion of the circumference.
What is an arc?
This is space taken up by a pie slice of a circle.
What is a sector?
This is a line that intersects a circle at exactly one point on the circumference.
What is a tangent line?
This is a line segment that connects two points on the circumference.
What is a chord?
An angle created by the connection of two chords or secants.
What is an inscribed angle?
This is 2 times Pi times the radius.
What is circumference?
This is Pi times the radius squared.
What is the area of a circle?
This is a line that intersects a circle at exactly two points on the circumference.
What is a secant line?
A chord that passes through the center of a circle.
What is a diameter?
Inscribed angles are this much less than their corresponding central angles.
What is half?
This is 2 times Pi times the radius times the arc angle divided by 360.
What is arc length?
This is Pi times the radius squared times the arc angle divided by 360.
What is sector area?
The angle created by a tangent line and a connected radius.
What is a right angle?
Two chords that have equal arc measures.
What is congruent?
The relationship between arc angles and the central angle that forms them.
What is congruent?
This degree of arc represents 1/6 of a circle.
What is a 60 degree arc?
This sector represents 1/4 of a circle.
What is a sector w/ a 90 degree arc?
This an angle outside the circle formed by secant or tangent lines.
What is an external angle?
These angles are formed by the intersection of two chords.
What are chord angles?
Central angles are this much more than a corresponding inscribed angle.
What is double?
This degree of arc represents half of a circle.
What is an 180 degree arc?
This sector represents 1/12 of a circle.
What is a sector w/ a 30 degree arc?
This is the formula used to find the measure of an external angle formed by secant or tangent lines.
What is 1/2(major arc - minor arc)= External Angle?
This is the formula used to find the measure of a chord that lies vertical to a given major and minor arc?
What is 1/2(major arc + minor arc)= Chord Angle?
This inscribed angle's corresponding central angle is 126 degrees.
What is 63 degrees?