Google Classroom
GeoGebra
GeoGebra Classroom
Sign in
Search
Google Classroom
GeoGebra
GeoGebra Classroom
GeoGebra
Home
Resources
Profile
Classroom
App Downloads
Proof Without Words: Squares and Primes
Author:
Roy Wright
Topic:
Square
A proof without words: When you take 1 away from a square number, you will never get a prime number. Well,
almost
never. (The
green dot
in the lower right can be dragged.)
GeoGebra
New Resources
Kopie von parabel - parabol
Average Rate of Change: Graph a Function (1)
Lorenz Attractor: Multiple particles
Variation Theory Parallelogram Proofs
Roman Numerals Bingo
Discover Resources
conic-envelope
Unit circle half angle diagram.
FORUM - saving last coordinates
Graphs of e and ln
statistics
Discover Topics
Poisson Distribution
Limits
Expected Value
Equations
Continuity