<em>a supplementary angle is equal to 180⁰ they are angles on a straight line / flat line</em>
<em>a supplementary angle is equal to 180⁰ they are angles on a straight line / flat lineif you want to find a missing angle in a supplementary angle then you have to subtract the given angles by 180⁰</em>
hope this helps and please ask if you have any questions :)
