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Tangent and Chord Rules Arc Length and Sector Area. Accelerated Math 2. Chord. Two minor arcs are congruent if and only if their corresponding chords are congruent. . Tangent. Remember: A tangent is perpendicular to the radius
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Tangent and Chord RulesArc Length and Sector Area Accelerated Math 2
Chord • Two minor arcs are congruent if and only if their corresponding chords are congruent.
Tangent • Remember: A tangent is perpendicular to the radius • Also, if two tangents start at the same point, then they are congruent.
Chords and Diameter • If one chord is a perpendicular bisector of another chord, then the first chord is a diameter. • All of the following congruencies will be true:
Arc Length • Arc Length is a partial circumference • Arc Length differs from Arc Measure in that it is measured in units (cm, ft, in……) Arc Measure is measured in degrees • Formula:
Sector Area • Usually a shaded area, like a slice or multiple slices of pizza • Sector Area is a partial area • Formula: