Question

why do we use angle side angle in proofing opposite sides of parallelogram is equal but not in proofing if opposite side of a quadrilateralis equal then it is parallelogram?​

Answer 1

Answer:

Coronavirus disease (COVID-19) is an infectious disease caused by a newly discovered coronavirus.

Most people infected with the COVID-19 virus will experience mild to moderate respiratory illness and recover without requiring special treatment.  Older people, and those with underlying medical problems like cardiovascular disease, diabetes, chronic respiratory disease, and cancer are more likely to develop serious illness.