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GeoGebra
GeoGebra Lesson
GeoGebra
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Elliptical Ceiling Reflecting Sound
Author:
Mr_Lanning
Elliptical ceilings reflect sounds from one focus to the other focus.
GeoGebra
Drag the Speaker around to see where the sound reflects.
New Resources
Building Algebra Tile Models for Trinomials
Calculating Arc Length, Radius, and Central Angle
Midpoint Theorem (V2): Integer Solutions
Basic and Compound Inequality Illustrator
Squaring a Rectangle (PST Version)
Discover Resources
Testing
Proj Parallel Lines
Angle Properties of Circles - Property 4
Another example with a different array.
Linear Transformation
Discover Topics
Orthocenter
Definite Integral
Curve Sketching
Congruence
Hypothesis Testing