Maths question regarding curved bay window I have been using Archimesh to create floor plans for a representation of my house. Generally, this is OK but it really is not very flexible with curved walls and cannot reflect my bay window at all.
All curved walls so far have not been smooth enough to add the 4 bay equal size window panels that I have.
I have finally decided that I will succumb to splitting the bay into 4 straight walls.
As it is not an exact representation, but I do want it to look right, I realise I have a maths problem to solve to identify the angles and lengths of these 4 walls.
The width of the bay on my plan is 240cm. At the centre of the bay, it should reflect a protrusion of 70cm and the curve of the bay is consistent with an arc on a perfect circle although I cannot be sure how many degrees of circumference this would be. It looks roughly 75 degrees to me. I expect with the width of the bay and the distance the window protrudes, this can all be calculated.
If anyone could provide me with wall lengths and angles to create this, I would be grateful.
Also, in case I have to change scale but with the same ratios, I would be grateful for the working to calculate this in the future.
Width of bay  240cm
Maximum protusion at centre of window 70cm
No of sections to split curve 4
Cheers
@batFINGER's or something like it, is clearly the most accurate way, but if eyeballing is enough, you can use the Spin tool to create an arc between 3 points.
If the 2 end vertices are not aligned to a convenient set of axes, you may have to make a Custom Orientation from them.
Select the 2 end vertices, and ShiftS Cursor to selected.
ShiftD duplicate one of the end vertices, and call up the Spin tool. Adjust the spin center in the perpendicular to the two ends to pass the arc of the spun vertex through the third point, and its angle to span the end points.