In a quadrilateral ABCD A = 70 degrees B-112 degrees C-43 degrees, What percentage of the sum of the angles is D?

univerkov | August 30, 2021 | education

All angles add up to 360 °.

Therefore, the angle D = 360 ° – (70 ° + 112 ° + 43 °) = 360 ° – 225 ° = 135 °.

Let’s make a proportion to calculate how much it will be in percentage:

360 ° – 100%;

135 ° – X%.

Then, X = 135 ° * 100% / 360 ° = 37.5%.

Answer: Angle D is 37.5% of the sum of the angles.

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.