Intro to circle terminology: radius, arcs, chords, and tangents
Intro to circle terminology: radius, arcs, chords, and tangents
7:35
About this lesson
Terms related to circles
- Radius
- Diameter
- Circumference
- Central angle
- minor arc
- major arc
- Inscribed angle
- Chord
- perpendicular bisector
- Tangent
- point of tangency
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Video 1 of 8
Intro to circle terminology: radius, arcs, chords, and tangents
8 min
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Properties of inscribed and central angles in circles
6 min
Finding an inscribed angle using the central angle theorem
2 min
Finding chord length BC using sine and the radius
3 min
Positioning two spotlights at different angles on a display board
2 min
Finding angle BCD using inscribed angles from the same arc
2 min
Finding angle AEB using inscribed angles and triangle angle sum
2 min
Finding angle CED using vertically opposite angles
1 min