MathDB
2015 Geometry #4

Source:

July 1, 2022
2015Geometry Test

Problem Statement

In trapezoid ABCDABCD with ADBCAD\parallel BC, AB=6AB=6, AD=9AD=9, and BD=12BD=12. If ABD=DCB\angle ABD=\angle DCB, find the perimeter of the trapezoid.