Geometry Problem 1403: Quadrilateral, 90 Degree Angle, Perpendicular, Congruence

Proposition

The figure below shows a quadrilateral ABCD, AB = AD, angle ABC = angle ADC = 90 degrees. If AN and DM are perpendicular, prove that AM and BN are perpendicular.
This entry contributed by Erina-NJ.
 
 

Geometry Problem 1403: Quadrilateral, 90 Degree Angle, Perpendicular, Congruence, Tutor

 


Poster of Problem 1403 Sketching, Typography, Art using iPad Apps


Poster of Problem 1403: Sketching, iPad, Typography, Art, quadrilateral perpendicular, congruence

Geometric Art using Mobile Apps

Geometric art is a form of art based on the use and application of geometric figures. A geometric figure is any set or combination of points, lines, surfaces and solids. A mobile app or mobile application software is a computer program designed to run on smartphones and tablet computers.

 

Recent Additions

Geometry Problems
Ten problems: 1401-1410
Visual Index
Open Problems
All Problems
Quadrilateral
Perpendicular lines
Congruence
View or Post a solution