Vertex-edge graphs exploration

Notice and Wonder

What do you notice about these graphs? How many vertices do each of them have? How many edges do each of them have? Is there a path which uses each vertex and each edge?

New Resources

The black friday GeoGebra :)
koch tool
Silhouettes without gaps and isolated
toro test
Untitled

Discover Resources

Sine and cosine rules 3
algebra (a+b)^2 proof
Rhombus Construction
Equilateral Theorem
求点坐标

Discover Topics

Reflection
Limits
Area
Geometric Mean
Sphere