Geometry--Angles in A Circle
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14 terms
Terms | Definitions |
|---|---|
 central angle rule | measure of angle= measure of arc |
| inscribed angle rule | measure of angle= ½arc |
| radius drawn to Tangent at the point of tangency | radius ⊥ Tangent |
| angle formed by a tangent and a chord | angle = ½arc |
| angle formed by two secants | angle= ½( larc - smarc) |
| angle formed by a secant and a tangent | angle= ½(larc -smarc) |
| angle formed by two tangents | angle= ½(larc -smarc) |
| angle formed by two chords | angle=½(chord+chord) inside angle |
| if two central angles are congruent... | chord≡chord & arc≡arc |
| if a diameter is ⊥ to a chord... | it bisects chord & bisects arc |
| line segment rule when two chords intersect | (part) (part) = (part) (part) |
| line segment rule when two secants intersect | ( wo) = wo) w= whole o= outside |
| line segment rule when a secant and tangent intersect | wo) = wo) w= whole o= outside |
| diameter and chord | angle is 90* |
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