# Circle Tangent Line, Theorems and Problems - Table of Content, Page 6

Geometry Problem 665.
Intersecting Circles, Secant, Tangent line to circle, Angles, Mind Map.

Geometry Problem 662.
Triangle, Incenter, Circumcenter, Orthocenter, Circle, Tangent line to circle, Angle, Measurement.

Geometry Problem 657.
Triangle, Incircle, Tangency Points, Parallel Lines, Congruence, Tangent line to circle.

Geometry Problem 652.
Archimedes Book of Lemmas: Proposition 12
Perpendicular chords, Arcs, Radius, Tangent line to circle.

Geometry Problem 649.
Archimedes Book of Lemmas: Proposition 10
Tangent, Chord, Perpendicular, Parallel, Midpoint, Tangent line to circle.

Geometry Problem 646.
Archimedes Book of Lemmas: Proposition 7
Square,Inscribed and Circumscribed Circles, Area., Tangent line to circle.

Geometry Problem 644.
Archimedes Book of Lemmas: Proposition 5
Semicircle, Circle, Perpendicular, Arbelos, Archimedean Twins, Tangent line to circle.

Geometry Problem 643.
Archimedes Book of Lemmas: Proposition 4
Semicircle, Circle, Perpendicular, Arbelos, Area, Tangent line to circle.

Geometry Problem 641.
Archimedes Book of Lemmas: Proposition 2
Semicircle, Perpendicular, Midpoint, Tangent line to circle.

Geometry Problem 639
Semicircle, Diameter, Perpendicular, Inscribed Circle, Tangent line to circle, Arbelos, Congruence.

Geometry Problem 637
Semicircle, Diameter, Perpendicular, Inscribed Circle, Chord, Tangent line to circle, Arbelos.

Geometry Problem 636
Semicircle, Diameter, Perpendicular, Inscribed Circle, Common Tangent, Tangent line to circle.

Geometry Problem 635
Semicircle, Diameter, Perpendicular, Inscribed Circle, Radius, Tangent line to circle.

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