Triangle Yvonne

Triangle ( geometry)introduction triangle (geometry),geometry  figure consisting of three points,called vertices,connected by three sides.in Euclidean plane geometry,the sides are straight line.All triangles have 3 sides and 3 angles which always add up to 180.the Triangle inequality theorem state that:any side of triangle must be:less than the sum of the 2 sides and greater than the difference of the other 2 sides.