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Lessons 10-2 through 10-3 Vocabulary

Name: ___________________________________
Date: _______________________
Block: ____________
Across
(p. 708) The length of an arc is given in ______ units, such as centimeters.
(p. 708) The _____ of the length of an arc ℓ to the circumference of the circle is equal to the _____ of the degree measure of the arc to 360.
(p. 716) If a line, segment, or ray divides an arc into two congruent arc, then it _______ the arc.
(p. 716) The perpendicular ________ of a chord is a diameter (or radius) of the circle.
(p. 708) The measure of an arc is given in _______.
(p. 709) The arc lengths in Example 5a and 5b could also have been calculated using the arc length __________ (ℓ/2πr)=(x/360)
(p. 709) The ______ measure,
(p. 706) The ___ of the measures of the central angles of a circle with no interior points in common is 360.
(p. 708) Since an arc is a portion of a circle, its length is a fraction of the _____________.
(p. 707) A(n) __________ is an arc with endpoints that line on a diameter.
(p. 707) Major arcs and semicircles are named by their endpoints and another point on the arc that lies _______ these endpoints.
(p. 708) As with adjacent angles, you can ___ the measures of adjacent arcs.
(p. 707) A(n) _____ arc is the shortest arc connecting two endpoints on a circle.
(p. 716) If a diameter (or radius) of a circle is _____________ to a chord, then it bisects the chord and its arc.
(p. 707) In the same circle or in congruent circles, two minor arcs are congruent if and only if their central ______ are congruent.
(p. 707) __________ arcs are arcs in the same or _________ circles that have the same measure.
Down
(p. 706) A central angle separates the circle into ___ arcs with measures related to the measure of the central angle.
(p. 708) Arc ______ is the distance between the endpoints along an arc measured in linear units.
(p. 706) [Central angles'] sides contain two _____ of the circle.
(p. 707) A(n) _____ arc is the longest arc connecting two endpoints on a circle.
(p. 708) The 13 books of ______'d Elements are influential works of science.
(p. 708) The _______ of an arc formed by two adjacent arcs is the sum of the _______s of the two arcs.
(p. 709) The circumference of a circle is 2πr. So, one complete __________ around a circle equals 2π radians.
(p. 715) In the same circle or in congruent circles, two minor arcs are congruent if and only if their _____________ chords are congruent.
(p. 707) Minor arcs are named by their _________.
(p. 717) In the same circle or in congruent circles, two chords are congruent if and only if they are ___________ from the center.
(p. 706) A(n) _______ angle of a circle is an angle with a vertex in the center of the circle.
(p. 715) A(n) _____ is a segment with endpoints on a circle.
(p. 708) ________ arcs are arcs in a circle that have exactly one point in common.
(p. 715) If a chord is not a diameter, then its endpoints ______ the circle into a major and a minor arc.
(p. 706) A(n) ______ is 1/360 of the circular rotation about a point.
(p. 706) A(n) ___ is a portion of a circle defined by two endpoints.