Showing posts with label regular polygon. Show all posts
Showing posts with label regular polygon. Show all posts

Monday, December 6, 2010

Geometry Problems 421 -430

Ten Geometry Problems
Click the figure below to see problems 421-430 about: Right Triangle, Regular Pentagon, Cevian, Angles, Measurement, 30 Degrees, Congruence, Circumcircle, Circumcenter, Altitude, Circumradius, Quadrant, Area.

Geometry Problems 421 -430Read more

Level: High School, College geometry

Thursday, November 11, 2010

Geometry Problems 261-270: Regular Polygon, Pentagon, Hexagon, Circle, Tangent, Similarity, Triangle, Hypotenuse, Catheti, Geometric Mean, Altitude,

Ten Geometry Problems
Click the figure below to see problems 261-270 about Regular Polygon, Pentagon, Hexagon, Circle, Distance, Triangle, Hypotenuse, Catheti, Similarity, Geometric Mean, Altitude, Perpendicular, Projection, Tangent, Fractional Exponent, Common External Tangent.


Level: High School, SAT Prep, College geometry

Friday, October 29, 2010

Problem 533: Euclid's Elements Book XIII, Proposition 10

Geometry Problem
Click the figure below to see the complete problem 533 about the sides of the regular pentagon, regular hexagon and regular decagon inscribed in the same circle.

Euclid's Elements Book XIII, Proposition 10, Math Education
See also:
Complete Problem 533

Level: High School, SAT Prep, College geometry

Monday, October 11, 2010

Geometry Problems 221-230

Ten Geometry Problems
Click the figure below to see problems 221-230 about Isosceles, Equilateral triangle, Trapezoid, Regular Polygon, Viviani's theorem, Altitude, Distances, Apothem, Centroid, Midpoint, Perpendicular, Transversal.

Geometry Problems 221 - 230
Level: High School, SAT Prep, College geometry

Sunday, March 14, 2010

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.

Problem 430: Circumscribed and Inscribed Regular Pentagon, Perpendicular, Areas.
See also:
Complete Problem 430

Level: High School, SAT Prep, College geometry

Friday, March 5, 2010

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.

Problem 429: Circumscribed and Inscribed Regular Pentagon, Perpendicular, Measurement.
See also:
Complete Problem 429

Level: High School, SAT Prep, College geometry

Sunday, December 27, 2009

Problem 410: Two Regular Pentagons, Angle

Proposed Problem
Click the figure below to see the complete problem 410 about Two Regular Pentagons, Angle.

Problem 410: Two Regular Pentagons, Angle.
See also:
Complete Problem 410
Level: High School, SAT Prep, College geometry

Wednesday, March 18, 2009

Heptagons, Theorems and Problems

Index


Heptagons, Theorems and Problems.

Read more at:
gogeometry.com/geometry/heptagon_heptagram_seven_index.htm

Level: High School, SAT Prep, College geometry

Heptagon and Heptagrams / Septegrams


There are two regular heptagrams, labeled by Schlafli symbols as {7/2} and {7/3}, with the second number representing the vertex interval step from a regular heptagram, {7/1}.

Heptagon and Heptagrams / Septegrams.

Read more at:
gogeometry.com/geometry/heptagon_heptagram_seven.htm

Level: High School, SAT Prep, College geometry

Wednesday, January 14, 2009

Elearn Geometry Problem 225: Viviani Theorem Extension

Regular Polygon, Apothem, Distance
In a regular n-sided polygon, the sum of the perpendicular distances from an interior point to the n sides being n times the apothem of the polygon.


 Geometry Problem 225. Viviani Theorem Extension
See complete Problem 225 at:
gogeometry.com/problem/p225_viviani_theorem_regular_polygon.htm

Level: High School, SAT Prep, College geometry

Sunday, November 16, 2008

Kurschak's Tile and Theorem.


Jozsef Kurschak (Hungary, 1864-1933) An elegant and a purely geometric way of finding the area of a regular dodecagon.

Kurschak's Tile and Theorem.
Continue reading at:
gogeometry.com/kurschak1.html

Monday, May 19, 2008

Elearn Geometry Problem 63



See complete Problem 63
Regular Heptagon, side and diagonals. Level: High School, SAT Prep, College geometry

Post your solutions or ideas in the comments.