9-point circle and incircle/excircles

Author:Ph_M

Dans un triangle A, B, C et son orthocentre D le cercle des neuf points est tangent au cercle inscrit et aux trois cercles exinscrits des triangles ABC, ABD, ACB, BCD

New Resources

apec
Sum of Squares: Proof without Words
Focus and Directrix
seo tool
Fractal Tétraèdre. Dilatation -1/2 centre triangles

Discover Resources

Exponential and Logarithmic Functions
distanzaAB
Mensuration
Pythagorean Areas
Centroid and areas
monocycle

Discover Topics

Arithmetic
General Quadrilateral
Dilation
Multiplication
Limits