Euclid's Fifth

Euclid's Fifth Postulate

Adjust the sliders to change the size of alternate angles n and m. Can you find the relationship between n and m to decide which side of XY the lines AB and CD cross?

New Resources

The Gardener's Circle
רישום חופשי
Fractal Tétraèdre. Dilatation -1/2 centre triangles
apec
The Gardener's Ellipse

Discover Resources

Stirling Recording Chart
Teken van sinus, cosinus, tangens en cotangens.
פונקצית שורש
Activity 18
Geogebra5

Discover Topics

Interest Calculation
Real Numbers
Set Theory
Scalene Triangles
Geometric Mean