This is called the "miter" and may be 45 degrees or any other angle.
A strut joint is a form of miter joint used in making trusses.
I will give him back to you with the cross and miter, monseigneur.
Their insignia of office, the miter and crosier, are familiar to every one.
I also learned that what I called the bishop's hat was a miter.
He wears a miter and a flowing ...