Search
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Quick Lamp Base Modeling Demo

Author:Tim Brzezinski
In this screencast, notice how the base is a frustum of an elliptical cone. That is, for this surface, cross sections of planes parallel to the floor and this surface are ellipses.

Quick Silent Demo

New Resources

  • bewijs stelling van Pythagoras
  • Linear Systems + Relationships Between Coefficients and Solutions
  • Billard V5.2 and V6
  • Tetrahedron String Art
  • Neuberg's Theorem

Discover Resources

  • Lesson 8.6 - Proportions and Similar Triangles - Geometry
  • miðpunktur
  • spherical coordinate
  • Telo iz kvadrata piramida, zlati rez...
  • ternary search

Discover Topics

  • Pyramid
  • Cuboid
  • Cylinder
  • Planes
  • Terms
AboutPartnersHelp Center
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®