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What's on the worksheet
- Find arcs and angles from a diameter perpendicular to a chord.
- Find the exact lengths and distances from the center for three chords of a circle of radius 9.
- Find the line, ends and length of a chord of a circle with a given midpoint.
- Explain why the line AO bisects the chord BC and find BC.
- Find the radius of a round window from two parallel glazing bars.
- Prove a segment from the center through the arc midpoint is perpendicular to the chord.
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The free lesson teaches it with worked examples and practice problems.
Chord theorems: the lesson ›More Chapter 10 worksheets: Circles
- 10.1Chords, secants and tangents
- 10.2Arcs and central angles
- 10.3Arc length
- 10.4Sectors, segments and their areas
- 10.5The inscribed angle theorem
- 10.6Inscribed polygons and cyclic quadrilaterals
- 10.7Proving the inscribed angle theorem
- 10.8Chord theorems
- 10.9Tangent properties
- 10.10Proving a tangent is perpendicular to the radius
- 10.11Angles made by chords, secants and tangents
- 10.12Segment lengths in circles
- 10.13Proving the power of a point relationships
- 10.14Regular polygons and their circles
- 10.15Equation of a circle
- 10.16Finding the center and radius