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

  • Average Value
  • Visualizing the Pythagorean Identity with Sine and Cosine
  • Untitled
  • Prism Drawn in 2-Point Perspective
  • 兩位數的位值

Discover Resources

  • Polynomials-Introduction
  • Complex roots lab
  • Integral_Abs_f_Bug
  • poincare
  • Theorem 7
  • Polynomial Graph with Rate of Change …

Discover Topics

  • Limits
  • Differential Equation
  • Addition
  • Trigonometry
  • Interest Calculation
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®