News

Only the orange triangle has 3 equal sides and 3 equal angles. This is a regular polygon. It is called an ... the right-angled triangle in the outside set? It is not a quadrilateral or a regular ...
Only the orange triangle has 3 equal sides and 3 equal angles. This is a regular polygon. It is called an ... the right-angled triangle in the outside set? It is not a quadrilateral or a regular ...