Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
GeoGebra
GeoGebra Classroom
GeoGebra
Home
Resources
Profile
Classroom
App Downloads
The Reflection Triangle and the Orthocenter
Author:
Steve Phelps
Topic:
Geometry
,
Orthocenter
,
Reflection
Let triangle A'B'C' be the triangle formed by reflecting the vertices of triangle ABC in the opposite sides. Circles A'BC, B'AC, and C'AB intersect at the orthocenter H of triangle ABC.
GeoGebra
New Resources
Rolling Triangle
z`]]
The Cosine Formula - Proof Without Words
Floch, fractal, iteration, custom tool.
Untitled
Discover Resources
Derivative of exponential function
Rotations
multiplying 1 digit and decimal numbers
Maddie's Quadrilaterals
Interfernce of two waves
Discover Topics
Prism
Addition
Intersection
Circumcircle or Circumscribed Circle
Limits