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### 12 Cards in this Set

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• Back
 Central angles are __________ to their opposite arc equal Inscribed angles are ______ the opposite arc one half of radii and tangents are perpendicular tangent-secant angles are half their opposite arc an inscribed triangle angle measure=s 90 degrees opposite angles in an inscribed quadrilateral are supplementary any central angle is equal to the average of its adjacent arc and the adjacent arc of itsvertical angle IF TWO SECANTS starting from the same exterior point create an angle, it is equal to the two numbers subtracted and divided by two if two tangents going to a circle are from the same exterior point, then they are congruent When a diameter is perpendicular to a chord, it cuts the arc and the segment in half if two chords are equal, the two arcs that correspond from those are equal arc length formula circumference x (angle meas. / 360)