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

  • Writing and Graphing Proportional Relationships (k>0)
  • Angle Addition Postulate (V2) - Integer Solutions
  • Rotating Custom Polygons Around an Axis
  • Midpoint Theorem Questions: Mild
  • Squaring a Rectangle (PST Version)

Discover Resources

  • Basic Constructions
  • Temple for Solving System in 3 Variables
  • TriIsosc_3
  • Vector Projection
  • Hình 105 trang 100

Discover Topics

  • Triangles
  • Real Numbers
  • Perimeter
  • Matrices
  • Distributions
AboutPartnersHelp Centre
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®