i don,t know
8
28
Certain quadrilaterals have right angles. Right trapezoids are the most general example. Rectangles are specialized right trapezoids, and squares are specialized rectangles. There may be more but I can't recall them. Many rhombuses and parallelograms have no right angles. However, they might (and then you'd probably call them squares or rectangles but they are also technically rhombuses, parallelograms and trapezoids).
16 - four in each !
To be pedantic a flag is technically a thin cuboid. So there are 24 right angles on the back and 24 right angles on the front with 12 right angles on each side of the flag. There are 4 reflex angles on the back and 4 reflex angles on the front of the flag. Answer: 96 right angles and 8 reflex angles.
Generally, there are no right angles in a parallelogram, but rectangles and squares can be seen as special parallelograms, as they have all the qualities needed to be classed as parallelograms, and in addition, they have four right angles.
Including those at the boundaries of the flag, there are 16.
two, squares and rectangles
two
There are 4 90degree angles in a rectangul
16
Four per square, four per rectangle.