diff --git a/slides/ws-video/angle.jpg b/slides/ws-video/angle.jpg
index 618f9f733117e9796fe71fd1c1a952c82be62bda..ca9f7bf90c9b22ea05d4cfe6869bb96b8c025d3c 100644
Binary files a/slides/ws-video/angle.jpg and b/slides/ws-video/angle.jpg differ