MathDB

13

Part of 2023 Sharygin Geometry Olympiad

Problems(1)

find the greater angle of trapezoid

Source: Sharygin 2023 - P13 (Grade-8-11)

3/4/2023
The base ADAD of a trapezoid ABCDABCD is twice greater than the base BCBC, and the angle CC equals one and a half of the angle AA. The diagonal ACAC divides angle CC into two angles. Which of them is greater?
geometrytrapezoidanglesSharygin Geometry OlympiadSharygin 2023