The opposite angles of the quadrangle are 120 degrees and 60 degrees.
| September 21, 2021 | education
The opposite angles of the quadrangle are 120 degrees and 60 degrees. Prove that it is fashionable to describe a circle around this quadrangle
The sum of the internal angles of a convex quadrilateral is 360, then the angle (ABC + ADC) = (360 – BAD – BCD) = (360 – 60 – 120) = 180.
In a quadrangle, the sum of opposite angles is 180, therefore, a circle can be described around it, which was required to be proved.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
