Replacement vinyl strip for exterior bay window

With the part snapped in, I can't tell if the shape matches. Remove a piece of this vinyl glazing and send us a profile photo, like the example drawings below.

Example illustration of a cross section.

I'm afraid this new photo doesn't tell us what you have. We need to see the end profile. Please refer to the example illustrations I provided in my initial response. We need to see your glazing from that angle.