Given any point on the screen (mouseX, mouseY) I need to draw a triangle bordered by a 135-degree line through that point (slope == -1) and by the left and bottom axes. In other words, anchored on the bottom-left corner of the screen (0,height-1) and on the x- and y-axis points where the 135-degree line would intersect them.
My friend Matt and I had numerous issues with our Geometry teacher a few decades ago. As did he with us.
Thanks for any help!