< PREVIOUS PROBLEM | NEXT PROBLEM >

A point D is inside a triangle ABC (figure below) such that angle ACD = angle BCD = angle CAD = 10 degrees, and angle BAD = 20 degrees. Find the measure of angle CBD.This entry contributed by Ajit Athle.

See also: Triangles Angles Angle Bisector Congruence Solution Kaleidoscope of Problem 1146 base on Poincare Disk Model. Kaleidoscope of Geometry Problem 1146, iPad Productivity Apps; Adobe Spark Post Puzzle of problem 1146 (35 quadrilateral pieces)

Selected Topics

Home | Search | Geometry | Problems | All Problems | Open Problems | Visual Index | 10 Problems | Problems Art Gallery | Art | 1141-1150 | Triangles | Angles | Congruence | Last updated: Feb 14, 2016 by Antonio Gutierrez

Post or view a solution to the Problem 1146