Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
GeoGebra
GeoGebra Classroom
Outline
The Circles of Lester, Evans, Parry, and Generalizations
Basics
Fermat Points
Kiepert Point
The First Lester Circle
The Symmedian and Isodynamic Points
The Circles of Lester, Evans, Parry, and Generalizations
Author:
Steve Phelps
Topic:
Circle
The Circles of Lester, Evans, Parry, and Their Generalizations From Paul Yiu's MathFest presentation in 2008
Table of Contents
Basics
Basic Triangle Centers
Fermat Points
Fermat Point and Negative Fermat Point
Fermat Point and the Orthocentroidal Circle
Fermat Points and the Centroid
Fermat Points and the Orthocenter
Circle Through the Fermat Points
Kiepert Point
The Kiepert Point (Perspector) and Kiepert Triangle
Kiepert Hyperbola
Points on Kiepert Hyperbola
Circles Through Fermat Point & Kiepert Hyperbola
The First Lester Circle
The First Lester Circle
The Symmedian and Isodynamic Points
Inverses and Orthogonal Circle
Next
Basic Triangle Centers
New Resources
Art and Rotational Symmetry
aperiodic monotile construction_step by step
Periodic Functions
Chaotic behaviour
What is an Isogonal Conjugate?
Discover Resources
Linear Graphing
Net of a Prism
A plane containing two intersecting lines
Testing
Roller Coaster
Discover Topics
Hyperbola
Trigonometry
Equilateral Triangles
Random Variables
Isosceles Triangles