The name for BrF4 is bromine tetrafluoride.
Square planar
The bond angles are 120 degrees
90 and 180 are the approximate bond angles.
The bond angles in BrF5 are approximately 90 degrees.
Tetrahedral
Urea is sp2 hybridized, so the bond angles are ~120 degrees.
The bond angles in ammonia (NH3) are approximately 107 degrees.
SeF6 is a regular octahedron , all bond angles are 90 degrees
The bond angle in COH2 is approximately 90 degrees. Each hydrogen atom is located at the corners of a triangle around the central oxygen atom, resulting in a bent molecular geometry.
The bond angles in IF4^- (iodine tetrafluoride) are approximately 90 degrees.
The bond angle decreases.