Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
GeoGebra
GeoGebra Classroom
GeoGebra
Home
Resources
Profile
Classroom
App Downloads
Simson-Wallace variation
Author:
M. Pilar Vélez
Construct a triangle ABC and free point D. Consider the perpendicular lines to DA, DB and DC. Ask for the locus of D so that these perpendicular lines are concurrent.
Simson-Wallace variation (M. de Guzman's book, pp45)
GeoGebra
New Resources
Open Middle Logarithm Exercises (1)
Monkey typing Shakespeare's complete works
探究由平行線和截線所成的角
Periodic Functions
Droste effect
Discover Resources
The Two Unit Circle
Circle Angles Graph
เกมคณิต
Quadratics
morgan k - dilation 12.3.19
Discover Topics
Logarithmic Functions
Conditional Probability
Sequences and Series
Optimization Problems
Continuity