Brianchon Corollary, Circumscribed Hexagon, Concurrency lines

Classical Theorem
Click the figure below to see the complete classical theorem.

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Brianchon's Theorem, Circumscribed Hexagon, Concurrency

Classical Theorem
Click the figure below to see the complete classical theorem.

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Problem 430: Circumscribed and Inscribed Regular Pentagon, Perpendicular, Areas

Proposed Problem
Click the figure below to see the complete problem 430 about Circumscribed and Inscribed Regular Pentagon, Perpendicular, Areas.


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Complete Problem 430

Level: High School, SAT Prep, College geometry

Problem 429: Circumscribed and Inscribed Regular Pentagon, Perpendicular, Measurement

Proposed Problem
Click the figure below to see the complete problem 429 about Circumscribed and Inscribed Regular Pentagon, Perpendicular, Measurement.


See also:
Complete Problem 429

Level: High School, SAT Prep, College geometry

Problem 343. Hexagon, Inscribed Circle, Tangent, Semiperimeter.

Proposed Problem
Click the figure below to see the complete problem 343 about Hexagon, Inscribed Circle, Tangent, Semiperimeter.


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Complete Problem 343
Level: High School, SAT Prep, College geometry

Problem 342. Pentagon, Inscribed Circle, Tangent, Semiperimeter

Proposed Problem
Click the figure below to see the complete problem 342 about Pentagon, Inscribed Circle, Tangent, Semiperimeter.


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Complete Problem 342
Level: High School, SAT Prep, College geometry

Archimedes' Book of Lemmas, Proposition #7

Problem 646: Square, inscribed and circumscribed circles
Exercise your brain. Archimedes wrote the "Book of Lemmas" more than 2200 years ago. Solve the proposition #7 (high school level) and lift up your geometry skills.



Continue reading at:
gogeometry.com/ArchBooLem07.htm