Most think is 90 and 180 degrees. the correct answer is 90.84, 89.20 and 179.9 degrees. This is due to the difference in distances between Br and the four Fs, which are not equal; they are 2.017 and 2.15.
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 HClO3 are approximately 109.5 degrees.
The bond angles in HNO2 are approximately 120 degrees.
The bond angles of SO2 are approximately 119 degrees.
Tetrahedral
The bond angles in BrF5 are approximately 90 degrees.
Urea is sp2 hybridized, so the bond angles are ~120 degrees.
The bond angles in ammonia (NH3) are approximately 107 degrees.
The bond angles in a molecule of CHCl3 are approximately 109.5 degrees.