- Chord , Diameter & Circumference of a Circle
- Problem 1: Chord , Diameter & Circumference of a Circle
- Concept of Secant & Tangent Line
- Problem 1: Concept of Secant & Tangent Line

- Concentric Circles and Common Internal and External Tangents to two C
- Problem 1: Concentric Circles,Common Internal & External Tangents of

- Perpendicular Radius Bisects Chord-3
- Perpendicular Bisector to a Chord Circle-2
- The perpendicular bisector of chord of circle passes through centre o
- Congruent Chords Equidistance from Circle-4
- Problem 2: Congruent Chords Equidistance from Circle-4
- Chords Equidistance of Circle are Congruent-5
- Problem 1: Chords Equidistance of Circle are Congruent-5
- Three Non-Collinear Points Form a Circle-1
- Problem 1: Three Non-Collinear Points Form a Circle-1
- Central angle theorem
- Problem 1: Central angle theorem
- Tangent to Circle-1
- Problem 1: Tangent to Circle-1
- Converse of Tangent to Circle-2
- Problem 1: Converse of Tangent to Circle-2
- Tangent and radial lines are perpendicular to each other
- Equal Tangent Segments from a Point to a Circle-3
- Distance of Centers of Externally Tangent Circles-4a
- Distance of Centers of internally Tangent Circles-4b