v Math Education Geometry Problem 819: Quadrilateral, Triangle, Angles, 30 degrees. Level: High School, Honors Geometry, College, Mathematics Education. Distance learning.
Online Geometry Problems

Online Geometry Problem 819: Quadrilateral, Triangle, Angles, 30 degrees. Level: High School, SAT Prep, College, Mathematics Education

The figure below shows a quadrilateral ABCD with AB = BC = CD, angle BAC = 40 degrees, and angle CAD = 30 degrees. Find the measure of angle ADC. Try to use elementary geometry (Euclid's Elements).

Quadrilateral, Triangle, Angle, 30 degrees
 


 

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