In a quadrilateral ABCD, the angle is A = 130 degrees, B = 50, C = 30. Find corner D.
| February 19, 2021 | education
The sum of the angles of any quadrangle is 360 degrees. Based on this, in quadrilateral ABCD:
A + B + C + D = 360
Substitute the known values: A = 130, B = 50, C = 30
130 + 50 + 30 + D = 360
210 + D = 360
D = 360-210
D = 150
angle D is equal to 150 degrees
Correct answer 150
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.
