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discovering geometry boning

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
Chord Central Angles Conjecture   If two chords in a circle are congruent, then they determine two central angles that are congruent.  
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Chord Arcs Conjecture   If two chords in a circle are congruent, then their intercepted arcs are congruent.  
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Perpendicular to a Chord Conjecture   The perpendicular from the center of a circle to a chord is the bisector of the chord.  
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Chord Distance to Center Conjecture   Two congruent chords in a circle are equidistant from the center of the circle.  
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Perpendicular Bisector of a Chord Conjecture   The perpendicular bisector of a chord passes through the center of the circle.  
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Tangent Conjecture   A tangent to a circle is perpendicular to the radius drawn to the point of tangency.  
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Tangent Segments Conjecture   Tangent segments to a circle from a point outside the circle are congruent.  
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Inscribed Angle Conjecture   The measure of an angle inscribed in a circle is one-half the measure of the central angle.  
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Inscribed Angles Intercepting Arcs Conjecture   Inscribed angles that intercept the same arc are congruent.  
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Angles Inscribed in a Semicircle Conjecture   Angles inscribed in a semicircle are right angles  
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Cyclic Quadrilateral Conjecture   The opposite angles of a cyclic quadrilateral are supplementary.  
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Parallel Lines Intercepted Arcs Conjecture   Parallel lines intercept congruent arcs on a circle.  
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Circumference Conjecture   If C is the circumference and d is the diameter of a circle, then there is a number such that C=πd. If d=2r where r is the radius, then C=2πr.  
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Arc Length Conjecture   The length of an arc equals the circumference times the measure of the central angle divided by 360°.  
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Created by: blulub
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