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

Derivative of f(x) = ln(x)
Let's fly!
bewijs stelling van Pythagoras
Constructing the Angle Bisector + Practice
Sticky point to list of points

Discover Resources

Fig 3.3 version 1
Triangle 3
Damped harmonic motion - displacement vs time plot
Cardioid Activities

Discover Topics

Orthocenter
Standard Deviation
Parabola
Algebra
Translation