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14 Cards in this Set
 Front
 Back
Chord Central Angles Conjecture

If two chords in a circle are congruent, then they determine two central angles that are congruent.


Chord Arcs Conjecture

If two chords in a circle are congruent, then their intercepted arcs are congruent.


Perpendicular to a Chord Conjecture

The perpendicular from the center of a circle to a chord is the perpendicular bisector of the chord.


Chord Distance to Center Conjecture

Two congruent chords in a circle are equally distant from the center of the circle.


Perpendicular Bisector of a Chord Conjecture

The perpendicular bisector of a chord passes through the center of the circle.


Tangent Conjecture

A tangent to a circle is perpendicular to the radius drawn to the point of tangency.


Tangent Segments Conjecture

Tangent segments to a circle from a point outside the circle are congruent.


Inscribed Angle Conjecture

The measure of an inscribed angle in a circle is half the measure of the arc it intercepts.


Inscribed Angles Intercepting Arcs Conjecture

Inscribed angles that intercept the same arc are congruent.


Angles Inscribed in a Semicircle Conjecture

Angles inscribed in a semicircle are right angles.


Cyclic Quadrilateral Conjecture

The opposite angles of a quadrilateral inscribed in a circle are supplementary.


Parallel Lines Intercepted Arcs Conjecture

Parallel lines intercept congruent arcs on a circle.


Arc Length Conjecture

The length of an arc equals the degree measure of the arc divided by 360 degrees, times the circumference of the circle.


NOTE

I did not include the conjecture about the circumference!!! That is just common knowledge.
