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Geometry M5 Topic B
| Term | Definition |
|---|---|
| an angle formed by two secants, a secant and a tangent, or two tangents intersecting outside a circle is measured by | one-half the difference of the intercepted arcs |
| two tangent segments to a circle from the | same exterior point are congruent |
| a line passing through the center of a circle (diameter) and perpendicular to a chord | bisects the chord and its arcs |
| if 2 chords intersect within a circle, then the | products of the lengths of the segments of one chord equals the product of the lengths of the segments of the other chord |
| if two secants are drawn to a circle from an external point, the | product of the lengths of one secant and its external secant equals the product of the lengths of the other secant and its external secant |
| if a tangent and a secant are drawn to a circle from an external point, the | tangent is the mean proportional between the secant and the external segment of the secant |
| in a circle, | parallel lines intercept congruent arcs between them |
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